# Monster Girl Encyclopedia World Guide I: Fallen Maidens

***Monster Girl Encyclopedia World Guide I: Fallen Maidens*** (魔物娘図鑑ワールドガイド I: 堕落の乙女達) is one of the books of the Monster Girl Encyclopedia series. It was published on August 14th, 2011 at Comiket 80. It functions as a sequel to Monster Girl Encyclopedia I, although here the book follows a different format, discussing individual places and people within the Monster Girl Encyclopedia world. *Monster Girl Encyclopedia World Guide - Side II* can be considered as an expansion of this book with similar format and focus on the same location.

There is also a non-canon collection of novellas about the characters involved: *Monster Girl Encyclopedia Stories: Fallen Brides.*

## Monster Girl Encyclopedia World Guide I: Fallen Maidens | Synopsis

The framing story of *Fallen Maidens* sees its in-universe author, Wandering Scholar, fleeing from the Order after his (blasphemous) publication of *Monster Girl Encyclopedia I*. He seeks refuge in the recently-corrupted nation of Lescatie, and interviews its new ruler, Druella, the fourth lilim daughter of the Mamono Lord. In addition to recording more of his observations about monster girls, the Scholar includes case studies of several recently-monsterized women from the nation.

Each character biography gives a brief account of that particular character's story (background, history, etc.) before showing how the character changed after being transformed by mamono mana. All the monsterized women end up in love with one man:''YOU,'' the reader.

## Monster Girl Encyclopedia World Guide I: Fallen Maidens | Foreword

>Monsters drown humans in supernatural pleasure and tempt them into an existence of a devilish nature just like themselves. The monsters I found living in ''Mamono Realm Nation Lescatie'' when I dropped by this time were beings that truly fit that description.
>
>In this book, I've summed up everything I've collected until now as a scholar of monsters and added the knowledge I gained due to the cooperation of the mistress of Lescatie, and a daughter of the mamono lord, the lilim Druella, and many ''former'' humans. I've written in detail about the ecology and moral values of the monsters in ''Monsters' Ecology,'' and recorded the transformations that human women undergo when changing into monsters in ''Monsterization Case Files.''
>
>I would like the readers to read the second section carefully and become more acquainted with the details concerning the monsters. That is, if you still don't want to surrender your humanity.
>
>—*a certain wandering scholar of monsters*

---

>There is no suffering or sadness here. All there is, is a wonderful world of indulging in love and pleasure to the heart's content. If you come this way, you'll never have to fear anything, and you'll never have to suffer. This book is a guide to help you cast aside human fetters and be reborn.
>
>Now, let's have fun together... 💞 I'll teach you about the wonderful world of monsters... 👄
>
>—*Mistress of Lescatie, Druella*

## Monster Girl Encyclopedia World Guide I: Fallen Maidens | What a Monster is

The life forms called monsters all have different traits and values than humans, and they think and behave based on those. I'll explain the unique ecology and values of monsters so that you the reader can grasp the differences and similarities compared with humans and understand them better. However, even though we generalize them all as monsters, there are actually many different races of monsters that exist. For example, since all monsters seek to have sex with human men, most of them have no resistance to discussing it and related topics. But among them, there are some that have a strong sense of shame, or pride, and for that reason, there are also some races that would normally hesitate to discuss the topic of sex. However, it's certainly true that even they are far more lustful compared to humans, and once their devilish nature awakens, they display the same lasciviousness as other monsters.

So, it is extremely difficult to make a sweeping generalized introduction to these beings known as ''monsters'' which include a mix of a variety of races with different ecologies. The ecology of monsters that I'll be describing here is very generalized and only applies to the average monster, but on the other hand, please bear in mind that it's the form revealed by the fundamental essence that all monsters share in common.

### Monster Girl Encyclopedia World Guide I: Fallen Maidens | What a Monster is | The concept of monsters

Monster is a general term for various races that are reigned over by the Mamono Lord.

Formerly, in the age when the old Mamono Lord ruled the monsters that was called ''the age of the former Mamono Lords,'' monsters were grotesque creatures that devoured humans and spread death. However, since an immensely powerful succubus took over and became the new Mamono Lord, we've entered an age called ''the new Mamono Lord's age,'' and the monsters' forms have changed dramatically. All of them now have beautiful, alluring figures resembling human women. They attack humans, just as they did when they were grotesque creatures, however, the meaning behind it is completely different.

The monsters of the present have been heavily influenced by the nature of the Mamono Lord who is a succubus and their main food is the same as that of the Mamono Lord, living energy called ''mana'' that is contained within the semen, saliva, etc. of human men. Also, just as it appears, all of the monsters are female. Presently, a male monster has never been confirmed. For that reason, when they reproduce, they must have sex with a human man. And more than anything, in general, all ''monsters'' are lustful, and instinctual. They are devoted to pleasure and desire, especially the desire to have sex with men. Due to these goals, they coercively have sex with human men, and attack them in order to rape them.

### Monster Girl Encyclopedia World Guide I: Fallen Maidens | What a Monster is | Races of Monsters

No matter what, ''monster'' is a general term for various races. By definition, monsters don't have ''mana'' within their bodies beforehand, and each race has its own unique ''mamono mana,'' but due to the influence of the Mamono Lord, all monsters ended up having ''succubus' mamono mana'' inside their bodies as well. Humans, elves, angels, etc., races other than monsters, have energy within their bodies, but when they are assaulted by monsters, etc., they get violated by mamono mana, energy is driven away and expelled and it disappears so that they are twisted like monsters, and so these races of women are also treated the same as monsters.

If we classify the monsters into rough categories based on appearance and disposition, we can divide them as ''beastman type,'' ''demon type,'' ''reptile type,'' ''undead type,'' etc., and then we can classify them more minutely by tying together races with similar forms and traits such as ''lamia family'' ''wolf family'' ''succubus family'' ''harpy family,'' etc.

Additionally, the lamia family can be divided into the smallest units, ''races'' such as ''lamia,'' ''medusa,'' ''echidna,'' etc. But even monsters of the same family can differ wildly in form and traits depending on the race. Monsters are beings that are extremely rich in diversity.

In the other volume, ''Monster Girl Encyclopedia I,'' various races of monsters were introduced in detail with illustrations. In the introductions from the encyclopedia only one individual is portrayed in the illustrations, but of course, they have individual differences. Physique, facial features, clothing, etc. things that aren't set by the race's inherent special traits, vary depending on the individual. However, from a human standpoint, in the case of individuals of the same race, they often feel like they have a similar atmosphere about them for some reason, and since there are a lot of points that are similar or matching in terms of looks and personality, someone knowledgeable can distinguish the differences between races with similar forms, and even someone with little knowledge can probably sense it: "Are these two the same race?" "Although they look similar, I think they're different races." The illustrations in the monster girl encyclopedia are the average forms of those races in general. Basically, it's okay to think that most individuals look similar to the illustration.

### Monster Girl Encyclopedia World Guide I: Fallen Maidens | What a Monster is | Original Race / Sub-race

In the explanations of monsters, the words ''original race,'' ''sub-race,'' etc. are sometimes used. ''Original races'' are the monsters that founded the races of monsters classified in families such as ''XX family.'' For example, for the lamia family, it's ''lamia,'' for the slime family, it's ''slime,'' etc. Amongst all the monsters of XX family, the original race is the oldest race. It is supposed that most of the monsters belonging to XX family derived or evolved from the original race. They have the basic nature of monsters of XX family, and the original race is fundamentally supposed to be the most numerous of all monsters in the XX family. ''sub-race'' is a general term for monsters that derived or evolved from original races.

For example, medusa and echidna are regarded as sub-races of lamia, the original race. Sub-races are distinguished by having parts of their form and nature in common with the original species. If they have high abilities or special abilities compared to the original race, they are often described as ''higher races,'' but humans just call them that. With a few exceptions, the monsters themselves aren't aware of any kind of hierarchy based on that.

It is easy for peculiar sub-species to emerge in special environments. In the desert region, snowy region, Zipangu region, etc. many peculiar monsters unique to those regions can be seen. ''Mutated races'' are extremely special even amongst sub-species. As the name suggests, they come from mutations of the original race. ''Queen Slime'' is a mutation of ''slime,'' ''alice'' and ''alp'' are mutations of ''succubus,'' ''hobgoblin'' is a mutation of ''goblin,'' etc.

When the original race reproduces, mutations may be born very rarely. Also, sometimes they are only born under extremely special circumstances. Compared to the original species, they have a hugely different nature and traits, so we are treating them as a different race out of convenience, but technically they are just varied individuals of the original race. When a monster of a mutated race reproduces, the children born won't be monsters of the same mutational variant, but children of the original race. For example, if a hobgoblin has children, goblins will be born. If an alp has children, succubi will be born. However, when monsters of mutated races reproduce, the chance for a mutant to be born is slightly higher than normal. After a very long time, it is eventually possible for them to become an independent race of monsters. Additionally, this will be discussed in a later item, but for monster mothers and monsters of the original race, the birth of a mutant monster is an extremely happy event.

[For example, the physique, and hair color, etc. of a medusa may vary, but the common traits of a medusa, snake hair, and the lower body of a snake, match up. Also, many individuals basically have a lonely, stubborn personality.](https://mgewiki.moe/index.php/File:Z_Medusa.jpg)

## Monster Girl Encyclopedia World Guide I: Fallen Maidens | Monsters from the Humans' Perspective

### Monster Girl Encyclopedia World Guide I: Fallen Maidens | Monsters from the Humans' Perspective | Humans that hate monsters

The only reason the monsters of the present attack humans is to mate and get mana. They don't kill people and devour human flesh like the monsters in the age of the former Mamono Lords. Monsters never rob the lives of the men they attack. However, they certainly were bitter enemies of humanity in the past, so there is antagonism, and besides that, *The Order* which worships the Chief God who is regarded as the creator of the world, has an extremely strong influence among humans. According to *The Order*'s teachings, "monsters are beings that corrupt mankind and lead us to ruin." Besides that, there is even some false information being spread around a lot that says "monsters use their forms to bewitch humans, and then brutally kill them and greedily devour their flesh."

Since the age of the former Mamono Lords, the majority of humanity has kept faith in God and *The Order*, and lived their lives with values in line with *The Order*'s teachings, and as far as they're concerned, it's the truth. They hate monsters and are extremely afraid of them. Men who are actually attacked by monsters become their prisoners, and to them, all it looks like as to the reason they don't come back is ''the men were killed and eaten.'' It increases the credibility of the teachings and the false information.

The majority of humans live in such states where the influence of *The Order* is strong, and monsters are rejected. These states are called ''anti-monster states.'' To them, even in the present, monsters are ''enemies of humanity'' that should be slain. Knights and heroes are dispatched by *The Order* to slay monsters. Sometimes armies are also raised for attempting invasions of the Mamono Realm. However, there are many who realized the true forms of the monsters and realized that *The Order* is lying by actually meeting or being attacked by monsters.

Even the heroes and knights of *The Order* who had always despised monsters until then can't sense any wickedness or animosity from the friendly attitude of the monsters of the present, and the pure and straightforward love and affection that they direct towards men, so it disturbs them. Not only that, they are beings with a literally superhuman charm that is hard to resist and even their appearance and behavior are enough to make prisoners of men. Once they've had sex with them, it's over. The faith in god of the adherents of *The Order*, and all the values they cultivated in their lives crumble away easily, overwritten by a fondness for monsters, and obscene desire. Most of the people who get involved with monsters in this way become their prisoners, and there is no end to the number of those who have thrown out the teachings of *The Order*, and chosen the path of living with monsters.

### Monster Girl Encyclopedia World Guide I: Fallen Maidens | Monsters from the Humans' Perspective | Humans that are friendly towards monsters

Although they are in the minority, in recent years they have been increasing. The nations that accept and live with monsters are called ''monster-friendly states.'' Most residents are those who doubt the teachings of *The Order*, those who were charmed by monsters, and those who have lived with monsters since they were born. Those unstained by *The Order*'s doctrine would never hate monsters that are friendly towards humans. Without the obstacle that is *The Order*, the monsters are able to fully exhibit their ability to imprison men, and all of the men of monster-friendly states end up being fond of monsters and desiring them.

Humans who live near monsters naturally come closer and closer to sharing their values even without having sex with them due to prolonged exposure to their charm and trace amounts of mamono mana. Even from the viewpoint of humans in monster-friendly states, monsters are awfully lewd, but as they're gradually stained with their values, they don't feel disgusted. On the contrary, they feel that they're attractive. After always living beside them, being charmed by them, and having sex with them many times, the men go wild for the monsters, and are ruled by a strong love and desire that never goes away.

## Monster Girl Encyclopedia World Guide I: Fallen Maidens | Relations with Monsters

### Monster Girl Encyclopedia World Guide I: Fallen Maidens | Relations with Monsters | Encounters with Monsters

As explained before in previous sections, monsters are beings that absolutely need human men both as food and as reproductive partners. Due to the nature of the monsters of the present, they strongly seek human men. As beautiful, lustful predators, if they chance upon a human man, they will most likely assault, and attempt to rape and have sex with him. Though its form has changed, the urge to assault men is a deeply ingrained instinct that is a remnant of the age of the former Mamono Lords. To have sex with human men is one of the most deeply rooted fundamental desires that monsters have. The urge for sex arises from two strong desires, ''lust,'' the desire to seek pleasure from sex, and ''appetite,'' the desire to seek sweet mana, and they love to give in to these desires.

A direct assault isn't their only method of ''predation.'' For one thing, all monsters are highly attractive beings, having literally supernatural charm and beauty. Men find them irresistible, and they take advantage of it to entice men into having sex with them. Furthermore, there are those who excel at charm magic, and those who release mamono mana or pheromones in order to give men mating fever and drive them wild. After pouring it into a man, conversely, they make him attack them. The temptation of monsters is extremely powerful. Unable to bear the lust that arises due to the monsters' temptation, even the moral and rational soldiers of The Order often end up having sex with them instead of executing them.

Also, in certain lands, there are marketplaces and auction houses where monsters that were defeated and captured by humans are sold as slaves, but even so, it's actually the monsters that are pulling the strings behind the scenes. It is said that all of the monsters being sold are only those who deliberately lost to humans and let themselves be captured because they personally desired ''to have a man take care of them.'' They use charm magic and mamono mana to entice men into ''running markets and auctions'' ''buying them'' ''training them'' and ''feeding them.'' The slavers themselves aren't even aware of it, but they're being pulled along by strings. Even the winning bidders are being completely manipulated so that the monsters can choose their own ''master.'' In cases where a human man tries to rape a monster, he may think he's doing it of his own will, but more often than not it's actually a result of him being tempted and lead on by the monster being raped herself. Other than that, monsters have various other abilities that they use to tempt and enthrall men, and they will try to have sex with a man using all sorts of methods.

### Monster Girl Encyclopedia World Guide I: Fallen Maidens | Relations with Monsters | Monsters that Imprison

In this way, most of the time when a human man meets a monster, he'll probably end up getting ravished and having sex with her. A monster's body isn't just to draw looks from men, it's specialized for pleasuring men. From birth, their instinct endows them with the knowledge of how to please a man, and they have techniques for giving men pleasure. If a man ever has sex with one of them even once, he'll become a prisoner of the exquisite pleasure that a monster's body gives him, and he won't ever be able to forget having sex with that monster until his last breath. And while having sex with a monster, again and again, the man will end up wanting to have sex with her even though it was originally forced, and eventually, he will adapt to where having sex with her will be a priority in his life.

In the case that the partner was a monster that has a grotesque lower body, such as snake, spider, etc. even if the man at first hated and feared that grotesque body, once he has sex with her, even that grotesque body will appear beautifully lewd, and he'll end up feeling that it's unbearably sweet.

The monsters don't always just imprison men through sex. Their every action tempts men and charms them. Even a casual utterance or gesture can make their beauty and loveliness charmingly stand out, and at times, it is their lasciviousness that stands out, and they drive men absolutely crazy. Additionally, the strong love they have for men can be felt through sex, as well as their normal conduct and gestures.

Because of that, men don't just become prisoners of the pleasure they get from sex. They end up having unbearable feelings of love for the monster as a woman, and as an individual, and their body and heart end up both getting completely charmed by the monster, so they become prisoners. Most men who have become a monster's prisoner could never think of leaving them.

The soldiers of The Order who give in to temptation and have sex with a monster become unable to kill the monster before their eyes that they had tried to execute. They choose to flee with her, abandoning the kingdom and The Order. Male slavers who capture monsters will become prisoners of the monsters they were going to sell, give up slaving, and go live with them. Once a man has had sex with one of them, he becomes unable to resist the pleasure he receives from the monster until the very end. For example, even if he were released after being attacked by a monster, if they've had sex, then he'll be unable to forget that devilish pleasure, and he'll want to be attacked by the monster again, so he'd probably end up going to the monster's dwelling on his own.

### Monster Girl Encyclopedia World Guide I: Fallen Maidens | Relations with Monsters | Monsters that Become Prisoners

After a monster assaults and has sex with a man, in the case that the monster liked the man, she won't release the man afterward. She'll want to keep him at her side, continuing to have sex to gain mana. In this way, when a monster really likes a man, her instinct ends up recognizing him as her husband. Only female monsters exist, and human men are males to them. They do get married, but to monsters being married isn't just emotion and an agreement. Their interest and lust for the man who becomes their ''husband'' swells. They become extremely fond of the odor of his sweat, and the taste of his semen, and it highly arouses them. They end up having even greater ''appetite'' ''lust'' and ''affection'' for the man. On the other hand, their lust and interest in other men grows thin. Their energy tastes bland, or even disgusting. And then, they stop acknowledging men other than their ''husband'' as males or prey, and they only seek and have sex with their ''husband.''

Monsters who have obtained a ''husband'' go through changes that are not just mental, but physical as well. Their already alluring body changes to match with their husband's, adapting into ''a body just for their husband'' to suit his tastes so they can get even more pleasure from their husband, and they can give their husband even more pleasure and make him happy, resulting in them being able to milk even more mana. Also, in human settlements where monsters coexist with humans, etc. where monsters live in places close to humans, if a monster develops feelings for a specific man, at that point, her instinct will recognize that man as her ''husband,'' and it's not uncommon for her body and heart to begin changing before she even assaults him and before they even have sex.

To monsters that have husbands, their husband is most precious to them and he takes priority over anything else. Having sex with their husband gives them more joy and pleasure than anything else, and they're happiest at that time. Even though the monsters are lustful hedonists, they treat the man they chose as their ''husband'' extremely wholeheartedly, and this is why they value him even more than they value themselves. There are many explanations for why this trait exists such as:

- "To make it so that they don't fight over prey with other monsters."
- "By further charming the man and adapting to his body, they're able to obtain greater amounts of energy with more efficiency."

But it is said that it may just be that this is simply because the personality of the current Mamono Lord who changed the nature of the monsters to be as it is now is being reflected straight into the monsters' instinct.

Monsters can sense when a man is strongly stained with ''mamono mana'' or a monster's scent, and they can tell that that man is a ''monster's husband'' and whose husband he is. Among monsters, there is an implicit understanding that when a human man is already another monster's husband, he belongs to that monster, and they shouldn't assault him at random, so men who have become a monster's husband basically don't get assaulted by monsters. However, in the case that the monster really feels strongly about the man, or in the case of races that are fundamentally polygamous, that's not necessarily true.

If a monster feels so strongly about a man that her instinct has recognized the man as her ''husband,'' and she's already begun to change into a female exclusively for him, then there's no way she's going to be able to ignore her intense desire merely because of something like an implicit understanding. She'll give in to the urge, assault the man, and fuck him. After that, the monsters who share a ''husband'' will end up living together, cooperating at times to milk energy from the man, and at other times, fighting over who gets to have sex with him longer and more often. Once this happens to a man, he'll have to catch all the desire of multiple lascivious monsters with his one body. He'll end up having to keep offering them large amounts of mana, every day switching off, or perhaps, doing all of them at the same time.

## Monster Girl Encyclopedia World Guide I: Fallen Maidens | Diet of Monsters

### Monster Girl Encyclopedia World Guide I: Fallen Maidens | Diet of Monsters | Essence

Most monsters feed on the vital ''essence,'' that human men have a lot of. They absorb it inside their body and convert it into ''mamono mana,'' the vital energy of monsters. For monsters, essence is a delicious treat that is far better than any other kind of food. Monsters that obtain and taste essence will be engulfed in powerful ecstasy and joy. Even monsters that mainly eat things besides energy can still take in energy and convert it to mamono mana. To them, a man's energy is a sweet treat.

Essence is plentiful in human bodily fluids, especially semen. Besides drinking it through their mouth and ingesting it, they most prefer to milk it out using their vagina by having sex with a man. Since energy is mainly taken in through sex in this manner, while ''sex'' is an act of reproduction for monsters, at the same time it is also ''feeding.'' Additionally, the taste and smell of essence lingers faintly on a man's body, and is comparatively thicker on the penis. Monsters can enjoy the taste by licking a man's body, or taking it in their mouth or vagina. For monsters, a man's very existence itself is like a sweet treat because he has essence within his body that they can taste and enjoy by licking, sucking, and having sex, resulting in pleasure that soothes their body and heart.

For that reason, monsters say "Delicious."' or "Looks delicious." when they see a human man, and they refer to sex as ''eating.''

Since monsters build up mamono mana by obtaining essence, monsters that have more sex with men and get more energy poured inside them generally become stronger individuals. The more powerful a monster becomes, the more essence she requires, and they never get tired of consuming it. For monsters it's like a drug: the more they absorb, the more they want, so when more essence is poured inside them, not only do they become more powerful, they grow into much more lustful monsters.

The essence of each individual man has a distinctive feel and taste. Humans can't sense it, but monsters are sensitive to it, and because of that, it's possible for them to sense and distinguish the presence of individual men based on the trace amounts of essence that a man scatters around.

![Monsters are insatiably hungry for semen. Even if they swell their womb up with it, stuff their cheeks full of it, and have their entire body covered in it, they'll still be dying for more of your semen.](https://mgewiki.moe/index.php/File:Imp_extra_1.png)

### Monster Girl Encyclopedia World Guide I: Fallen Maidens | Diet of Monsters | Husband's essence

The taste of essence is greatly influenced by the state of the monster when she ingests it. When they have sex, the quality of energy increases, and the more powerful their love and desire for a man becomes. In other words, the energy of the man they recognize as their ''husband'' is the highest-quality energy to a monster, and there is no better treat. Just having semen, which contains essence, on the tip of their tongue will cause the scent of it to completely enrapture them, and if it is poured inside their womb, then they will be engulfed by the greatest happiness due to the sensation of being stained only by their husband and having their body and heart become full of their husband, along with the thick taste of their husband which they most prefer.

Once they taste their husband's essence, not only does the energy of other men become unpalatable, it becomes so disgusting that it makes them feel like throwing up. Most monsters that have known the taste of their husband's energy become a prisoner of that energy, practically entering a state of semen addiction. Once this happens, sex with monsters improves: they offer stickier oral service, sexual intercourse becomes more frenetic and lasts longer, and they avariciously covet even the energy included in saliva, so kisses will change to become deeper and lewder.

The odor they can sense from the faint energy released by their husband also fans their arousal and makes them unbearably horny, so if they smell it directly, their body and heart will melt into a sticky mess, and make them unable to think about anything but tasting their husband's essence.

For them, it's best to have semen which includes energy poured into either their mouth or their womb, but having semen splatter on their body and having their body painted white with semen is never unpleasant to them. Even though they'd feel like it was a waste, having their whole body covered in their beloved husband's semen and its odor would allow them to sense their husband from all over their body and make them experience strong ecstasy whether they like it or not.

Once they're totally out of it, they will unconsciously scoop up the semen on their body with their fingers and carry it to their mouth, or spread it and rub it into their body, even more, to get the feeling and odor of the energy to remain on their body. Humans can't sense it, but as for monsters, especially those smelling their husband's mana, the thick, sweet scent strongly tickles their nostrils. Since it continues to linger for quite a while even after they wash it off, they can keep feeling happiness and joy from being indefinitely engulfed in the odor of their husband's energy.

### Monster Girl Encyclopedia World Guide I: Fallen Maidens | Diet of Monsters | The other stuff they eat

Essence is the greatest treat for monsters, but there are many of them that mainly eat food other than mana, and even monsters that mainly eat energy can also replenish nutrients by eating normal food.

There are also monsters that prefer to eat the raw flesh of wild animals or wild grasses, but their sense of taste is basically extremely similar to that of humans. With a few exceptions, monsters can also eat cooked stuff made with ingredients that are edible for humans. Among the monsters, there are many that seize men and keep them at their side, and perhaps for that reason, monsters seem to instinctively know what humans eat, and many cook to feed men.

Since monsters can survive just by having sex with men, eating normal food is often done for other reasons besides getting basic nourishment. Even among monsters that primarily feed on mana, there are many that also taste and enjoy food purely for amusement. Also, since there are various foods with a variety of effects among the foods of the Mamono Realm that improve sex with men such as fruits that boost monsters' charm and abilities, cause monsters to go into heat, or heighten sexual sensitivity, etc. there are many who periodically eat ''prisoner fruits'' as a dessert to enhance their own charm, and use the various ingredients of the Mamono Realm to cook and eat ''appetizers'' which make sex with men more delicious. There are also monster chefs who specialize in such ''appetizers,'' and in the cities of the Mamono Realm there are restaurants run by monster chefs that are said to be popular with monster and incubus couples.

Additionally, there are also nutritional supplements made using energy collected by ''golems.'' They're drugs for monsters that can't get a human man, and a tiny amount replenishes a huge amount of energy compared to normal food, but since this energy that's not obtained through sex with men is bland and doesn't taste very good, it's basically not preferred. It tastes especially disgusting to monsters who have tasted their ''husband's mana'' at least once as described before, and it's not something they can bring themselves to drink.

Furthermore, it seems the monsters of the ''age of the former Mamono Lords'' preferred to eat human flesh, but the monsters of the present have changed greatly, so they instinctively find the idea of killing and eating humans to be disgusting, and they wouldn't even consider it.

## Monster Girl Encyclopedia World Guide I: Fallen Maidens | The Body and Abilities of a Monster

### Monster Girl Encyclopedia World Guide I: Fallen Maidens | The Body and Abilities of a Monster | Monster's Body

The monsters' forms range from being not much different from that of a human woman to a variety of forms that are like a human woman mixed with anomalous parts, such as a woman with wings instead of arms, or a woman's upper body combined with a different lower body, etc. Although they have various forms, as for the part of them that has the form of a woman, it may be a beautiful, full-figured, voluptuous temptress, or it may be an adorably lovely little girl who stimulates a man's protective instinct and desire for dominance whether he likes it or not. Either way, they are all extremely attractive and ideal to men.

And it's not just the sight of them. If a man touches the faintly flushed soft skin that they show off even once, he'll be enthralled, and it'll make him want to hold them tight and keep touching that skin forever. The inhuman blue, green, etc. skins of some races are also alluringly beautiful, and they'll draw a man's eyes and imprison him with their devilish charm. Furthermore, even their body odor sweetly and pleasantly tickles a man's nostrils. A monster's female scent is peculiar and good, awakening the male instinct inside of men. It makes a man want to be engulfed in the smell forever.

Many monsters have extremely durable bodies and high physical abilities compared to humans. Some races have high athletic abilities and freakish strength, and they are easily capable of robbing the lives of untrained humans, but of course, they never think of any such thing, and they hardly ever actually do it. To them, those athletic abilities and freakish strength are not for that purpose. Instead, they're mainly used for capturing men and having sex. Besides, their overflowing stamina is for having sex with a man again and again over a long period of time, and their strong legs and loins are for getting on top of a man and shaking their hips violently.

Additionally, a monster's body is specialized for having sex with men, and it is built to be sensitive to all of the pleasure that they can receive from a man. Even when men fuck them violently enough to break a human woman, they don't feel any pain, and all they can do is enjoy the strong pleasure. Even little races that are way smaller than humans like the ''fairy'' only experience ecstasy and euphoria when their stomachs swell up as they get pierced by a man's rigid erection that is way bigger than even their own body. It is impossible for a monster's body to be broken through sex.

### Monster Girl Encyclopedia World Guide I: Fallen Maidens | The Body and Abilities of a Monster | Reproductive Organs

A monster's body is generally equipped with the same kind of organs as a human woman. However, even though the monsters' various organs look the same as humans', they are equipped with greatly different functions and uses. For monsters, their basic life activity is having sex with men, so of course, they're used for sex. It's not an exaggeration to say that their entire body is an organ for having sex with men.

Once their devilish vagina engulfs a penis, it tightens up as if to keep the prey from escaping, and begins pulsation to milk out semen as though it has a mind of its own. Through extreme pleasure, the inside of the man's head is stained one color with thoughts of them. Even after semen is released, in order to swallow up every last drop of it, the womb greedily holds in the beloved man's alter-ego and won't let it go. Once all semen is completely released, the pulsation will greedily start again right away to try and get more semen. Their vagina and uterus are equipped with the monster's unique sensory organs for absorbing a man's energy and tasting it. Pleasure and the taste of energy spread throughout their whole body and they experience a sensation like their body is melting.

If semen is poured inside their womb, as long as there is semen in their womb, the thick taste of energy continues to linger. Until the semen in their womb disappears, their thoughts keep melting away with ecstasy and euphoric feelings. For that reason, they always want to taste sugary sweet mana, and to that end, they'll demand sex from men again and again and even rape so they can keep the inside of their womb full of semen as much as possible. They like to spend time joined with men for the same reason. It's not just pleasure. They love the sensation of the taste of their beloved man continuously spreading throughout their entire body.

Of course their mouth is also used for eating, and it has adapted specifically for pleasuring men and milking semen. Besides the normal sense of taste, it is equipped with a monster's unique special sense of taste that can sense the flavor of energy included in a man's semen and saliva, etc. Also, inside their mouth, a slight amount of mamono mana is included in the faintly sweet saliva that is secreted. When they engulf a penis, lick it, and suck it, it is used as a lubricant to provide even more pleasure, and aside from that, it is sent directly into the man's body through kissing, hotly igniting his passion from within. Their tongue extends alluringly, crawling freely around the penis and giving pleasure as if it were a living creature. While kissing, their tongue deeply and wetly tangles around the man's tongue, greedily trying to taste saliva. While giving a man pleasure like this, if thick, sticky semen is eventually released inside their mouth, they can fully enjoy energy due to the monster's unique taste buds equipped everywhere throughout their mouth, such as the tongue, and mucous membranes, etc.

If they swallow it afterward, the taste and aroma of mana, which is the best and the sweetest, passes through the throat, and then at the same time as it drops into the stomach, a hot, satisfying sensation and a mind-numbing ecstasy courses throughout their entire body.

The monsters use more than just their mouth and vagina during sex with men. The monsters know all of a man's weak points. Their palms gently envelop the penis, and each fingertip deliberately attacks the man's weak points. The alluring monsters' hands give the penis pleasure by fondling, stroking, and enveloping it, guiding a man to climax.

Monsters with full breasts can insert the penis between them, and then while using their hands to freely change the shape of their soft breasts, they give the man a sweet, melty pleasure. In addition, the feet, tail, etc. will be used to give pleasure to a man, and monsters who have vines and tentacles as part of their body will also use those. There are some that even use their hair to pleasure men. In this way, as far as monsters are concerned, their entire body exists for having sex with men and milking semen. It's extremely pleasant when men feel pleasure from their bodies and release energy into their bodies.

Also, as was explained in the section ''sex with monsters,'' these organs adapt to their ''husband'' once they get a husband and change into organs specialized for sharing pleasure with their husband. If it's a devoted monster, then she'll even feel that her entire body exists solely for her husband's sake, and she'll feel powerful joy because of it.

### Monster Girl Encyclopedia World Guide I: Fallen Maidens | The Body and Abilities of a Monster | Monsters' Intelligence

The standard for monster intelligence varies widely depending on race, but nearly all monsters can understand and utter speech in the same way as humans, and it's possible for communication.

Although their standard intelligence varies, most races come equipped with an instinctive knowledge concerning sex with human men. Also, no matter how low a monster's intelligence may be, they will greedily study and memorize knowledge concerning sexual matters.

There are some monsters that have intelligence and knowledge that greatly surpass humans, and there are even monsters who can devise various new spells, magical items, and medicines. However, no matter how smart they are and how much knowledge they've accumulated, they're still monsters, so of course, that knowledge will mainly be used for having sex with men. The various spells and magical items they develop are mostly used for improving sex with men.

### Monster Girl Encyclopedia World Guide I: Fallen Maidens | The Body and Abilities of a Monster | Mamono Mana

''Mamono mana'' is the vital energy that all monsters have inside of their bodies. Monsters always have a race-specific ''mamono mana'' along with ''succubus' mamono mana'' that pours into them from the Mamono Lord. Compared to humans, many of them have high magic power. Since mamono mana is mainly produced by absorbing ''male human essence'' and converting it into mamono mana inside of their body, it is purported that the more an individual has sex with men, the higher the magical energy she will possess.

Due to this magical energy, the spells they use are often vastly more powerful than similar spells used by ordinary humans. Some of them even have magical energy powerful enough to level a small town. However, of course, being monsters, they wouldn't use their magic power for something like that. Instead, it is mainly used for spells to seduce men, or enhance sex with men. ''succubus' mamono mana'' is an energy that is especially well suited for any charm and aphrodisiac spells, etc. In the present, since all monsters have at least a bit of succubus' mamono mana, the charm spells which were only used by some monsters such as succubus, etc. are now regarded as the chief fundamental spells that monsters use. Furthermore, not all monsters can use high-level spells. Even if all monsters have magical energy inside their bodies, they may not know how to use that energy freely, or they may not have the intelligence necessary to use it. Some races are not good at handling magical energy, and some can't handle it at all. For such reasons, there are many monsters that can't use spells at all.

Aside from spellcasting, small amounts of mamono mana are naturally continually released from the monsters' bodies. Monsters are always in a state where they're draped in mamono mana. This mamono mana that is released is used by them unconsciously for various purposes. When they have sex with a man, the energy serves to protect the man's body. No matter how roughly and how long they have sex, the man's body never enters an abnormal state worse than fatigue, and he can never die due to sex. It also ensures that the man won't be harmed by the monster's horns, scales, etc. If the man touches the tip of a pointed horn or scale, the mamono mana covering the horn or scale gently pushes him back with a feeling like the touch of soft skin.

### Monster Girl Encyclopedia World Guide I: Fallen Maidens | The Body and Abilities of a Monster | Monsters' Illnesses

The monsters have durable bodies, high mamono mana inside their bodies, and even a strong resistance to disease. Also, although they appear similar to humans, they are different organisms, so most of them don't come down with the same kinds of illnesses as humans. However, there are some peculiar and dreadful illnesses that only afflict monsters. Let's introduce some of them below.

#### Monster Girl Encyclopedia World Guide I: Fallen Maidens | The Body and Abilities of a Monster | Monsters' Illnesses | Mamono Realm Fever

Monsters normally release a minuscule amount of mamono mana from their bodies, but normally it's under control. When it goes out of control, a huge amount of mamono mana ends up being discharged as a powerful charm spell. The energy of those who contracted the disease that is released as a charm spell will unconsciously target their husband or a man they like if possible. If not, it will pour into any man who approaches and drive him wild with a powerful lust for the afflicted. Afflicted monsters lose all strength because of a lack of mamono mana. Since they space out and feel feverish while they are afflicted with the illness, even a normally ferocious monster that enjoys raping men will find herself getting thoroughly raped by men driven wild. Additionally, in the middle of sex, the energy that is poured inside is immediately converted into mamono mana and continuously poured into the man, so the sex won't end until they both get completely worn out and fall asleep.

It's not an illness that can lead to death. If they rest for a while and get some sleep, they naturally recover. Also, after getting completely worn out after non-stop sex with a man exposed to mamono mana, if she sleeps a whole night while still joined with him, it's even possible to make a full recovery overnight because the mamono mana released by the afflicted goes through his body and returns to her own body, However, if treated through this method, the man who remained joined with the afflicted will definitely change into an incubus due to his body having been continually exposed to large amounts of mamono mana throughout the night.

#### Monster Girl Encyclopedia World Guide I: Fallen Maidens | The Body and Abilities of a Monster | Monsters' Illnesses | Pneumania

An illness where the body and instinct of the afflicted feel that there is not enough, even though they do have plenty of mana, causing them to constantly seek more. If monsters who have known the taste of mana, especially the taste of their husband's energy, go a long time without having sex with a man or their husband, and don't absorb mana, then outbreaks may rarely occur.

It's only clear that an outbreak has occurred when the afflicted have sex with a man. They tend to think that they just can't be satisfied since it's been so long since they had sex, but even after tons of sex, the afflicted won't be satisfied. They'll continue to desire energy incessantly. No matter what kind of monster she is, once she's tasted energy after an outbreak of this illness, her head will become filled with thoughts of nothing but mana, and she'll become unable to think of anything else until the illness is remedied.

Additionally, since they actually get more than enough energy each time they have sex, the body of the afflicted actually rapidly grows lustier, and the more sex they have, the wilder the sex becomes. It's an extremely terrible illness.

The disease can be remedied by doing nothing but having sex all day long except while sleeping and repeating this over and over for a while. Since the afflicted convert every single bit of the huge amount of energy poured into them during this time into mamono mana, after making a full recovery, their power as a monster is greatly increased compared to before the outbreak. Afterward, sex will change, becoming more lewd and wild. Furthermore, the man who kept having sex with them during their treatment will have had to have sex a significant number of times in a short period of time, so he'll definitely change into an incubus during the treatment.

#### Monster Girl Encyclopedia World Guide I: Fallen Maidens | The Body and Abilities of a Monster | Monsters' Illnesses | Alraune Pollen Allergy

Outbreaks rarely occur among monsters who breathe in pollen produced by ''Alraune.'' Since all of the alraune became females after the shift to the ''new Mamono Lord's era,'' they no longer use pollen for reproduction, but even now, whenever spring comes, they release pollen infused with mamono mana into the air. The afflicted have the inside of their body violated by mamono mana after breathing it in, and then their body begins to naturally prepare for intercourse with a man. They end up in a state where their body flushes hotly, yearning for a man, the throbbing is intense, their vagina is always wet, and nectar drips out. The saliva, sweat, love juices, etc. of those afflicted with this illness have a sweet fragrance and taste, almost like alraune nectar. Men are lured in by the fragrance, and when they lick it, it melts away their thoughts.

There is no clear way to treat it. Some temporary relief can be had by having sex with a man, but both partners will get all sticky because the larger-than-normal amount of vaginal secretions causes a larger-than-normal amount of semen to be released. Furthermore, it is said that if a man afflicted with ordinary pollen allergy has sex with a person afflicted with alraune pollen allergy, a defensive mechanism kicks in, and the mamono mana infused in the alraune pollen seems to drive away the other pollen, so the man's normal pollen allergy will be cured.

For that reason, scholars expected the alraune pollen to have some kind of curative effect for pollen allergy, but if a man has sex with the afflicted and takes in alraune pollen even once, from then on, he'll become extremely sensitive to alraune pollen. In reaction to the fragrance of the sweet nectar and the slight amount of pollen, etc. released by the afflicted, he'll be overwhelmed by a maddening lust for them, his body will begin preparing for sex, and he won't be able to stand not having sex with them. For that reason, many scholars have expressed the opinion "isn't it simply being overwritten by a more severe form of pollen allergy?" instead of claiming that the original allergy was cured.

![This is the result if afflicted with alraune pollen allergy. Even the body of a bundle of pride like the vampire gets all sticky, and begins preparing for sex with the man before her eyes.](https://mgewiki.moe/index.php/File:03Vampire_crop.png)

## Monster Girl Encyclopedia World Guide I: Fallen Maidens | A Monster's Sense of Values

### Monster Girl Encyclopedia World Guide I: Fallen Maidens | A Monster's Sense of Values | All for the sake of sex

Most monsters prioritize their own pleasure and desire. They're hedonists who hate it when morals and ethics, etc. get in the way of pleasure. Also, the strongest desire of all monsters is to have sex with men and obtain mana. Their values and behavioral principles are based on that, their thoughts and actions are in line with that, and when monsters have conversations, etc. the topics are often mainly focused on capturing and having sex with human men.

Basically, monsters that don't have a human man will think firstly about attacking and obtaining a man. Monsters tend to use whatever means necessary if it's for the sake of obtaining a man. Of course, they'll assault and forcibly rape, but they may also use whatever means available such as seduction, spells, and potions to make a man their prisoner and claim him. Even if a man despises monsters, they'll rape and pleasure him again and again until the hatred directed at them changes into endless lust.

Monsters that have obtained a human man think firstly about having sex and act accordingly. For monsters, it is common sense to prioritize having sex with the man they love more than anything else. As for their thoughts and actions, they're mainly focused around getting off harder with their man and having more sex more intensely and frequently. Monsters that have obtained husbands are even more remarkable. A majority of their thoughts and actions are focused around their husband, or having sex with their husband. Of course, having sex with their husband is usually their highest priority. Food and outfits, etc all start to be chosen based on reasons like ''pleasing their husband more'' or ''making their husband even more aroused,'' etc. Monsters are already lascivious from the beginning, but the more sex they have with men, the more their values and behavioral principles become tainted by it.

Naturally, with values like these, the monsters fundamentally have no sense of aversion to sexual matters. Of course they have no resistance to using their own body for sex with men, and if it's for the sake of furthering their enjoyment of sex, then they have no qualms about using aphrodisiacs or spells not just on the man, but on themselves as well.

### Monster Girl Encyclopedia World Guide I: Fallen Maidens | A Monster's Sense of Values | Monsters' views on womanhood

The values of the monsters who have had their forms changed at the hand of the current Mamono Lord are extremely close to those of the succubi, one of which is the Mamono Lord herself. On top of that, they have been strongly influenced by the ideals of the Mamono Lord. They conceive of the ideal monster as being so alluring and lascivious that it can be called the ideal succubus.

Lasciviousness is considered to be a virtue, the more lascivious they are, and the more sex they have, the more highly regarded they are as monsters. A monster ought to always give in to desire, have sex with men, and indulge in pleasure and mana. The obscene form of a monster in ecstasy, drunk with pleasure, showered in mana, and no longer concerned with anything but sex, is the most beautiful and wonderful form of a monster. Among the monsters, there are some that are pure and chaste, and some that have a strong sense of shame. One could even say that they are very unlike monsters in general. And yet, they aren't even repudiated according to the monsters' values which regard lasciviousness as a virtue. The reason why is that, for the monsters, even that is just one of the tools they have to arouse men and get sex. It's because the monsters know that human men are attracted to and aroused by those kinds of women.

When monsters give off the smell and aura of energy that can only be sniffed out by monsters, it means they have had that much sex, and had lots of energy poured into them, so it's proof that they've spent their days indulging the way a monster should. Monsters that haven't gotten a man yet, or still haven't had that much sex yet, get envious, saying "I wanna hurry up and do it a lot too."

Even the current monsters respect and fear fighting skills and magic, etc., but they value seduction techniques for charming men, and sexual techniques for pleasing men, etc. just as much if not more. For that reason, monsters well-versed in sex are respected just for that, and the status of the succubus, which can even be called the symbol of sex, as well as that of other monsters like them, has risen greatly compared to in the age of the former Mamono Lord.

Also, monsters have an ideal image of the kind of woman they want to be, just as human women do. Eternal beauty is something that women, whether a monster or a human, have desired forever. The reason monsters try to stay beautiful forever is naturally so that they can continue to imprison a man forever. To them, dressing up is a way of accentuating their own attractiveness, causing men to grow fonder and more lustful towards them. On the contrary, if dressing up won't please a man, then it's entirely meaningless. To them, things such as dressing up ''to be popular with the same sex,'' or spending money freely on expensive accessories just to satisfy their own desire to show off, the way that human women sometimes do, is not very meaningful.

As far as monster women are concerned, women should be aggressive towards men when it comes to romance and sex. If a man won't turn and look at them, then they'll charm him with their body through assault and rape. They try to ignite a man's desire by being bolder and more aggressive when tempting men, and taking action on their own to seize a man's body and heart is the way a devilish woman should be. Although they are few in number, there are also races that are passive in nature who wait for men to assault them, but they spare no effort in making men want to assault them by pouring pheromones and mamono mana into the man, or adjusting their looks and charm to appeal to the man that they're targeting, etc. There are none among monster women that are truly passive towards men.

To monsters that have husbands, the ideal form of a wife is none other than the ideal form of a female. Keeping their husband prisoner eternally through their beauty and changing him into a male that desires nothing else but to have sex with them, then devouring his lust and mana, and bearing his children, is for them, the greatest joy as a female.

### Monster Girl Encyclopedia World Guide I: Fallen Maidens | A Monster's Sense of Values | View of Humans

As has been thoroughly described in all the sections until now, the monsters need human men for everything, including feeding, reproducing, etc. They don't feel the same cold emotion towards humans that a predator feels towards its prey. They treat them just as if they were their own kind, or with even greater love and affection. To them, while human men are their ''most delicious food,'' at the same time, they are ''male breeding partners,'' and ''dearly loved beings.'' For the monsters, love is directly tied to and connected with lust. Once they fall in love with a man, at the same time their heartbeat quickens, their body grows hot and flushes, and their womb throbs seeking the man.

We can say the opposite as well. For many monsters, love takes root during sex. Thinking "I'm after mana, so anyone will do," they have sex with men they've captured as prey, and then when they receive that energy in their body, that hot desire and pleasure changes into love. A man who shouldn't have mattered often ends up becoming the one and only man for them. This is the reason why most of the men who get assaulted by monsters are never able to escape from their clutches. In this way, the love and desire monsters have for men consist of the following 3 desires: ''appetite'' ''lust'' ''love.'' All 3 desires end up being aimed at a beloved man at the same time. "I want to attack. I want to be attacked." "I want to have sex." "I want to eat." "I want to have this male's children," etc. Their infinite desire and love are unleashed upon the man using their devilish body during sex. That's why monsters are so lascivious and lustful that human women don't compare.

The deepness of their love is revealed through having repeated intercourse with a man. The way they express love is different depending on various races. Some of them don't refer to their most beloved man as a husband at all. There are even races that call them ''slave,'' ''servant,'' ''food,'' etc., but the fact that they keep a particular man at home and have sex with the same man, again and again, is itself proof of the strong love they have for the man. It can also be seen from their attitudes and the way they treat the men. Even monsters that milk energy from a man every day as ''food,'' don't just milk the men who are supposedly ''food'' violently. They seek syrupy sweet ''food.'' They're overjoyed when their ''food'' gets off, and they have deep love just like other monster couples.

Even those that give their man obscene training every day as a ''slave'' and repeatedly rape them would hate it if their ''slave'' died or suffered. Just like the other monster couples, all of them value their ''slaves'' even more than they value themselves. It's just that for them, love takes on a different form. The monsters' bodies and hearts will have already completely changed, becoming exclusive to their ''food'' or ''slave,'' etc. The strong love and desire they direct towards their man is not at all different from that which would be directed at a husband. For them, their ''food'' or ''slave,'' etc. is irreplaceable in the same way as a husband.

Of course, the monsters have various different preferences for men, and there is such a thing as an ideal man to them, but there are hardly any types of men that they hate. Though they may feel that a handsome man is cool, or cute, it's not in their values to despise an ugly man as ugly. This even extends to virility during sex, which is normally very important to them. It's ''wonderful'' if a man has a huge tool and is well-versed in sexual techniques, but even if a man is timid and has a small tool, they just think _cute_ or _I'll train him._ It is impossible to be excluded from the monsters' interests due to personal appearance or physical performance. Tales of ugly male bandits and thieves, etc. who were charmed after being attacked by monsters due to sheer pleasure and love and then had a change of heart and stopped attacking people are not uncommon. The only ones really hated by them are complete scum who are beyond redemption.

Monsters are extremely positive towards human lust. Lust for women tends to be despised as a filthy thing among human women, but to the monsters, a man's lust is never a filthy thing. Rather, they view such lustfulness favorably, and feel great joy when it is directed at themselves.

The kind of man that becomes a prisoner of pleasure gets highly aroused as soon as he is tempted, and eagerly anticipates being raped makes them feel that he is ''cute.'' The kind of man who, ruled by desire, directs his lust towards them and attacks like a beast is regarded as ''wonderful'' by them. To them, when a man directs his lust at them in the same way that they direct their lust at him, that is proof that they're desired by the man. Lusting for one another and seeking one another is proof of love to them. Even supposing a man is a pervert with peculiar sexual propensities, in general, no matter how perverse the act, they'd be thrilled and overjoyed to have carnal desire directed at them. The depravity of it would only serve to accelerate the joy of pleasure.

Also, just like with male lust, they never hate the male sex organ from which energy and desire is born and unleashed upon them. To the monsters, everything about it is wonderful including the shape, which could be called grotesque, the faint scent of semen that lingers, and the heat that can be felt from an erection. It makes them envision penetration and ejaculation, and then all their thoughts melt away, igniting instinct. And if it belongs to a man they love, they'll be so fond of it that they'll spontaneously rub their cheeks against it.

Cheating often happens with human couples, but once the monsters get husbands, they never cheat. It is said that they're in half disbelief when they hear about how some human women think nothing of infidelity. The love and lust they have for their husbands isn't just born from emotion; it's deeply engraved in their instinct. No matter how far apart they are from their husband, they can't think about wanting any other man, and even if another man tries to tempt them, they display no interest. On top of that, even if a man were to forcibly rape them, their body will have already changed to belong to their husband alone, so they can't experience physical pleasure from any other man. Their body and heart will never yearn for a man other than their husband, and they never want the energy of someone other than their husband, so it's impossible for their love and desire for their husband to waver.

To a monster with a husband, their husband is the only male in the world that exists, so to them, they don't have any other choice to begin with. In the case of human women, they sometimes cheat because they get lonely, but in the case of monsters, if their husband won't come to be with them and they get lonely, they'll just assault him themselves in order to get a good taste of their one and only male, and fill in the feeling of emptiness that comes from loneliness with his cock.

It has been mentioned a countless number of times until now, but monsters love human men more than anything. For that reason, they can't stand the loss of beloved human life. For that reason, unless it's for self-defense, or protecting their friends or husbands, they won't take the lives of human men or women. Even when humans attack them, they basically try to avoid taking their lives as much as possible while fighting. If they don't have husbands, they'll capture and claim men for themselves. If they already do, then they'll try to capture and take men prisoner for other monsters. The main reason they fight humans is to claim men who are captured during the fighting. For that reason, when the monsters clash with the soldiers of the Order, casualties are extremely few, but the captured soldiers become the prisoners of the monsters without exception, and they end up getting dragged into devilishness.

Until now, I've mainly written only about human ''men,'' but the monsters are fundamentally affectionate even towards human ''women.'' They won't take their lives lightly. Concerning this, it is highly involved with ''monsterization'' which is described later, so I'll describe it in detail in that section.

## Monster Girl Encyclopedia World Guide I: Fallen Maidens | Monster Reproduction

### Monster Girl Encyclopedia World Guide I: Fallen Maidens | Monster Reproduction | Reproduction with Humans

A male hasn't been confirmed among the monsters of the present. They are only female beings. For that reason, they need a human man in order to reproduce and make children. Presently all children born between humans and monsters are monster females. Human and monster males haven't been confirmed for them.

For monsters, carrying the offspring of humans is one of their instinctive desires, and that is one of the reasons why monsters seek and assault human men. Becoming pregnant with the child of the man who became their husband especially greatly satisfies the instinct and desire of monsters as females, and makes them feel insurmountable happiness. When monsters have semen poured inside their womb, they can satisfy not only their lust and hunger, but their desire as a female too at the same time. For that reason, monsters who strongly desire to have semen poured directly in their womb absolutely loathe the practice of using contraceptive devices, etc. that is prevalent among humans where the man's semen isn't poured inside their mouth or womb or even squirted on their bodies, but is instead thrown away, or where magic and potions, etc. are used to ensure that pregnancy does not occur.

While their form as ''predators'' has greatly changed, monsters are still predators that are above humans on the food chain even now. For that reason, there are naturally fewer individuals than humans, and it is much more difficult for them to multiply. Compared to humans, it is harder for them to get pregnant. Monster and human couples inevitably have far more sex than human couples, but even so, it's much more difficult for them to become pregnant compared to humans. It makes monsters that much more overjoyed when they do become pregnant. They are ecstatic to become a mother and carry the crystallization of the love they share with their husband in their own womb. They end up feeling even more enamored with the child they carry in their own stomach and their husband who made them pregnant.

Most monster reproduction is either viviparous or oviparous. Those monsters that are nearly human and beastmen, etc. are basically viviparous, and those that have fish-shaped, insect-shaped, bird-shaped, or reptile shaped lower bodies, etc. are oviparous in the same way as the animals they share traits with, However, there's one point that makes them different from normal oviparous animals. Even monsters with the traits of fish, which reproduce via external fertilization in the case of animals, all need internal fertilization in the case of monsters. They must certainly mate directly and pour semen inside their body, and after fertilization, the egg develops inside their body for a while just as if they were viviparous before egg-laying. For that reason the time is comparatively shorter than for viviparous monsters, but there's always a time of pregnancy which will be described later.

Additionally, although there are overwhelmingly more viviparous or oviparous monsters, there do exist some among the monsters that don't fit into either category: for example, slime family monsters that increase via division, plant type monsters that make seeds, and ''matango'' and ''roper'' that multiply by parasitically infecting human women with eggs or spores, etc.

### Monster Girl Encyclopedia World Guide I: Fallen Maidens | Monster Reproduction | Pregnant Monsters

The growth of the embryo in the mother's womb is fueled by the mother's mamono mana, so the mother will need more energy than usual. Of course, the most efficient method of producing mamono mana is to have sex with her husband and obtain mana. Monsters who become mothers will then seek even more mana, so a monster's lust doesn't drop during pregnancy. On the contrary, they will instead seek to have more sex with their husband than usual. Compared to humans, they're relatively more durable. The body of a monster is specialized for sex, and mother and child can handle anything no matter how rough. Also, the child can store up mamono mana if the husband continues to pour energy into the mother while she's pregnant. Besides that, it is said that monster children experience sex and pleasure vicariously through their mother while in the womb, so the more the mother has sex during pregnancy, the more powerful and lascivious the monster will end up when she is born. For that reason, sex during pregnancy is recommended for monsters.

Moreover, it seems they become uneasy during pregnancy. An expectant monster mother will demand even more attention from her husband. Under such circumstances, give her what she wants. Have sweeter, stickier sex than normal. Hold her tight and gently caress her even when not having sex. The scent and body warmth of her husband is what will calm her down the most. It's important to do these things for her pleasure.

### Monster Girl Encyclopedia World Guide I: Fallen Maidens | Monster Reproduction | Devilish Children

The children of many races of monsters grow by suckling mother's milk during infancy just like humans. Even monsters of races that feed primarily on energy basically grow on mother's milk while infants. After that, during early childhood, many of them eat normal food and thrive on mamono mana shared by their mother.

Unlike in the case of humans, monsters reach sexual maturity extremely early. It's a bit different depending on race, but even at the latest, they reach sexual maturity by 10 years old, and it becomes possible for them to have sex with human men and become pregnant. Devilish children can even swell up their stomach and reliably receive an enormous penis that's incongruent with their still-immature, tiny body, and even in such a case, they don't feel pain, and they can only receive pleasure. Also, the thoughts of monsters are monstrously obscene from a very young age. They have knowledge of sex, and take a strong interest in human men. Monster children casually chat about monster-like topics such as sex, pleasure, etc.

Most of them grow up dreaming of sweetly obscene days spent having sex with a man, just like their mother; they anticipate tasting it in the future, and the act of receiving pleasure and energy is engraved in their instinct as a wonderful thing. For that reason, even monsters with the age and appearance of human children under 10 years old will thoughtlessly assault and ravish men with bodies way larger than their own in monstrous fashion once their desire for human men awakens if their tiny, young womb that's already ready to receive a man throbs.

''The way to seduce a man'' and ''how to eat a man'' is engraved in their instinct from birth. Even if they are very young, their speech and conduct charms men even if it's not a conscious effort. They exploit their own cuteness as ''children,'' attract men, and make them lust for them. When they end up engaged in sex with a man after that, they easily understand how to get off, and how to use their own body to please the man before their very eyes. And whenever they try it, they awaken to joy as a monster upon experiencing the pleasure they spent their whole lives anticipating with a man right in front of them drowning in the pleasure they themselves had given him. Even though their sexual technique is a bit clumsy when it's their first time, when they actually touch a man's body and actually try out the methods instructed by instinct, they blossom as monsters. In less than no time, they learn superior devilish techniques. They rapidly grow into lascivious monsters by the hands of men.

In spite of being tiny, their childlike body is already specialized for having sex with men and milking energy, just like that of an adult monster. Once a man has had sex with them, he'll become a prisoner of the child's body. Even in the case of extremely young monsters that are still being raised on normal food, if they assault a man and learn the taste and pleasure of energy that drives all monsters wild, from that moment on, they will copulate with men as splendid monsters, and start to live by sipping mana.

Also, monsters don't go through the growth process that human girls go through in which they scorn or avoid their father, perhaps for that reason, their devilish nature may rarely end up awakening to their own father, and there are also girls who will have sex with their father and try to get mana. Monsters raised that way will grow dramatically more powerful and possess far more mamono mana than those raised only on normal food, but in such circumstances, they generally acquire a taste for their own father's energy and then end up recognizing him as their ''husband.'' Furthermore, races such as ''slime'' that can have sex with a man right after being born have dirty thoughts and a mind to seek energy and pleasure from the beginning. They will have sex right on the spot with the human man in front of them who is their own father and obtain mana. Other than that, there are also races that live in groups for whom it's normal to milk energy from their father together with their mother, and become pregnant with their father's children such as ''large mouse'' and ''devil bug,'' etc.

Due to the increased coexistence of monsters and humans in cities in recent years, etc., monster children have started having contact with human men at even earlier ages. For that reason, they have an even richer knowledge and interest in sex, and it is said that monster children who desire to have sex with men earlier are on the rise. Along with that, many monster children who've become prisoners of the depravity and pleasure of having sex with men with their immature body also join the cult of ''Sabbath'' lead by ''Baphomet'' that advocates "the depravity and charm of little girls" so that they can remain children forever.

![Although children, monsters are monsters. Even very young monsters like this are already instinctively yearning for men. Given the chance, they'll copulate and try to fill their tiny young body with energy and pleasure.](https://static.miraheze.org/monstergirlencyclopediawiki/d/da/Youko_child_crop.png)

### Monster Girl Encyclopedia World Guide I: Fallen Maidens | Monster Reproduction | The Proper Form of Children

Every monster mother deeply loves her children, who are crystallizations of the love they share with their husband. Monster mothers always wish for the happiness of their children. They want their own cute daughters to grow to be more lewd and lustful like a fine monster, and spend their days in happiness as monsters who drown in the pleasure of sex with men. As far as other monsters besides the mother are concerned, it's a thing to be joyfully welcomed when monster children show an early interest in human men and sex. The sight of very young monsters assaulting and copulating with human men, tasting pleasure for the very first time, and awakening to their devilish nature and going wild as a result is considered a lovely, pleasant thing. Also, the obscene, depraved sight of the little girls who become prisoners while repeatedly having sex after that is regarded as wonderful by monsters who consider it a virtue to be more lascivious. Probably not even the mothers can hide their arousal.

In order to enable their daughters to find men through their own power and have sex, monster mothers often give their daughters as much freedom as possible and let them make their own decisions. Monster children basically spend their days doing whatever they like and going wherever they like. Monster children like to play with beloved human males, but while they're playing with human boys their own age that they get along with, or beloved big brothers and uncles, they awaken to monster-like obscene play. On such occasions, they often assault and ravish the male right then and there.

According to human common sense, it's regarded as abnormal for an adult man to lust after or have sex with a little girl. It's normal for such a man to be faced with fierce criticism. But as far as monsters are concerned, children have the body to charm and copulate with men from their early years, and additionally, there are also races that stay in the form of children even in adulthood, so it's a perfectly normal thing for human men to lust after and have sex with monsters with childish forms. Of course, men who have sex with monsters with childish forms are not criticized whatsoever. On the contrary, monster mothers tell them to thoroughly teach their daughter the taste of pleasure and mana, and raise her to be more lascivious, heightening her devilish nature, and many even look forward to their daughter becoming pregnant while very young and making a grandchild. Also, the organization ''Sabbath'' that recommends sex with very young monsters is considered as something that makes their daughters grow to be more lascivious monsters while they're still very young and cute, so it has an extremely good reputation among mothers.

Also, according to human common sense, it is taboo for parents and children to have sex and commit incest, but naturally, monsters have no such taboo. I previously mentioned that there are rarely monsters who end up recognizing their own father as their ''husband,'' but in that case, there are two possibilities. On the one hand, the mother can pleasure her husband together with her daughter, and she can teach her beloved daughter the goodness of her beloved husband. The whole family can become one, and experience bliss while having threesomes, or, on the other hand, the mother can treat even her own daughter as a rival and struggle over her husband in the same way as struggling with another monster over a man, vying for the husband by having sex. The desire for one's own father is not to be denied, and incest is never condemned. As far as monsters are concerned, if one has a desire for a specific man, then one should act on the urge and have sex with him. Even if it's one's own father, etc. it won't be a problem. On the contrary, the desire for a man takes the highest precedence, and it's unthinkable to discard it over something as trivial as ''blood connection.''

Many monster children brought up in locations near humans have knowledge of the human moral view that ''parent-child sex is taboo,'' but even so, that doesn't change their values. On the contrary, that knowledge gives them a feeling of depravity, and then children will only end up enjoying sex with their father even more, and mothers will only end up enjoying family threesomes even more.

Additionally, the birth of a monster of a ''sudden mutational race'' is a very joyous thing for mothers. Generally, monsters of sudden mutational races have a peculiar nature and possess high abilities, so they are also welcomed by all monsters. Harboring a new devilish nature and eventually using her new body and abilities during sex, the daughter will be able to produce a new pleasure. Monster mothers who want their own daughters to be more lascivious are overjoyed at the prospects of their daughter's future just as if it were their own, and it makes their hearts dance.

## Monster Girl Encyclopedia World Guide I: Fallen Maidens | Monsters' Clothes

### Monster Girl Encyclopedia World Guide I: Fallen Maidens | Monsters' Clothes | Clothes That Monsters Prefer

![To monsters, maid outfits aren't simply maid outfits. They're clothes for tempting, visually pleasing, and sexually servicing a man.](https://static.miraheze.org/monstergirlencyclopediawiki/thumb/a/ac/Anubis_and_sphinx_maids_crop.png/300px-Anubis_and_sphinx_maids_crop.png)

In the age of the former Mamono Lords when many monsters were grotesque monstrosities, other than those who were human in shape or of a high rank, the monsters didn't wear clothes, but now that they've changed into the form of women, many monsters do wear some kind of clothes.

Many of them instinctively prefer excessively revealing clothing. Their clothes expose and flaunt their alluring skin, unbound by reason or morality. We can say it's one of the symbols of the monsters who are open and uninhibited when it comes to sex and pleasure. For them, clothing is more about drawing a man's attention to their body and flaunting its beauty and allure to make him lust for them rather than protecting the body and keeping it warm, etc. For that reason, they prefer to have on clothing that is suited for assaulting, tempting, and having sex with men. Also, skimpy clothes are preferred by married monsters because it makes their skin stick to their husband better.

On the other hand, there are also very shy monsters who prefer clothes that aren't very revealing which could even be described as modest. That's probably not their intention at all, however. This, too, is an adaptation that evolved so they could evoke feelings of love and fondness from men who prefer that sort of outward appearance. It's no different in that the whole point of it is to show off for men.

What's considered fashionable to them are clothes for the purpose of charming men that further accentuate their own attractiveness. Under the pretense of fashion, they investigate men's tastes and inclinations. Some even fuss more than usual about tailoring their clothes for a particular man so that they can receive all the lust of the man they're targeting.

Additionally, there are characteristic patterns and designs that have been handed down by each particular race of monsters. Since many of them have similar tastes in clothing, even different individuals can often be seen wearing clothing with the same patterns and designs, or with a similar vibe, if they are of the same race.

Also, many monsters don't wear underwear. There are various reasons for this, such as it being a vestige of the age of the former Mamono Lords, or because it's convenient to be able to have sex with men right away after attacking, or because it's uncomfortable. Wild monsters that live in forests or caves, etc. basically don't wear underwear, and even most monsters that live in towns, etc. don't wear it, but on the other hand, there are more than a few monsters who do wear it. However, they do not perceive underwear as underwear. They perceive it as an article of clothing that is worn to visually excite men and be stripped off by men. Also, naturally, even monsters that basically don't wear underwear will wear it if their husband desires and is turned on by it, since their selection of clothing is based around sex and the man's desires.

Additionally, for monsters, clothes are to be worn during sex to visually and situationally arouse men. Many clothes that are worn and made by monsters are designed ''to be worn during sex'' such as the extremely light armor of the soldiers of the Mamono Realm that can be worn during sex, and clothing infused with the power of a succubus embroidered or engraved with ''pleasure runes'' that amplify the pleasure received by the person wearing it, etc.

In the cities that exist in Mamono Realms, the main streets are proudly lined with shops that deal in clothing to be used during sex. There, devilish, lewd clothing that grabs men's attention is sold, as well as clothes enchanted with various spells, and stuff for monsters and husbands with a peculiar taste; such as sexy maid outfits, sailor suits, and even bathing suits covered in ''sahuagin'' scales. It is said that many monsters visit and purchase clothing to enhance sex with their husband.

### Monster Girl Encyclopedia World Guide I: Fallen Maidens | Monsters' Clothes | Things Covering the Body Other Than Clothes

Among the monsters, there are those who don't wear clothes, but instead cover their body in fur, scales, or even flames produced by mamono mana, etc. Many cover their genitals that way too. This can be freely removed by their will using mamono mana, and they can also put it back the way it was. When it's time for sex, they remove it, expose their breasts and genitalia, and have sex with men.

Also, it is said that there are some who produce tentacles through their own mamono mana or manipulate tentacle plants from the forest of tentacles. They cover their body in these to try to live in a state of constant sensual enjoyment. The appearance is sensational enough in and of itself, plus they can skillfully use them to bind or tempt men, and it more than satisfies the monsters' condition of "being something to draw a man's eyes to their body, flaunting its beauty and allure, making him lust for them," so there's no issue whatsoever with them as clothing.

## Monster Girl Encyclopedia World Guide I: Fallen Maidens | The Habitats of Monsters

### Monster Girl Encyclopedia World Guide I: Fallen Maidens | The Habitats of Monsters | Wild Monsters

A great variety of monsters inhabit various places, and they can be broadly divided into 3 categories based on the places they inhabit. As for the first of those, it's wild monsters that live in places in nature like forests and mountains, or places called dungeons such as caves and towers. Of all monsters, the majority are in this category.

It's possible for them to live even in the kind of environments where wild animals live, and aside from those who live in caves on the surface of mountains, simple dwellings made from materials such as wood and leaves, or places abandoned by humans such as huts, there are also many who dwell in the countless dungeons that exist such as enormous caves, towers, and castles. A huge amount of these were built in ''the age of the former Mamono Lord'' as monster bases for the sake of opposing humans, and even after the transition to ''the age of the new Mamono Lord,'' they continue to be newly built.

Their adaptability is remarkable, and in spite of the extreme temperatures, many races of monsters lead peculiar lives even in areas such as volcanic and frigid regions. Wild monsters like these are always starving for human men, and if one were to encounter them it's almost assured that a sexual assault would take place.

Since it's possible for them to survive in the natural environment to a certain degree, many of them don't have a great sense of cleanliness, and as far as their dwelling is concerned, they don't care as long as it's a comfortable place to sleep, however, after obtaining a human man the way they're conscious of their dwelling changes dramatically. They maintain a much cleaner environment, they introduce usable furniture by processing wood and making it, or trading with other monsters for it, and they use mamono mana to adjust the temperature, etc. so that they can remake their dwelling into a place where they can comfortably live with a human man.

### Monster Girl Encyclopedia World Guide I: Fallen Maidens | The Habitats of Monsters | Monster Villages

The second category is those who live in villages or towns that consist of only monsters and their husbands. Typically they're built far away from human settlements, in places such as deep within forests, dungeons, or Mamono Realms, etc. These monster villages fundamentally need to bring in human men from the outside, so the residents are always after men. If a human man sets one foot in their territory, the monsters starving for a man will likely all attack him at once.

Also, in monster villages and dungeons, since there are many monsters gathered in one place, mamono mana grows dense. As for the monsters that live there, many individuals are extremely powerful and lustful compared to normal monsters. Additionally, in the case where many powerful races are present, even if the area around that location isn't a Mamono Realm, that place alone will often become a local Mamono Realm, and become extremely dangerous.

However, as for the dungeons where monsters live, aside from the fact that there are extremely rare goods such as magic items and medicines produced by monster technology and mamono mana, and spells that have long been lost to humans, the dungeons themselves are often valuable ruins from ''the age of the former Mamono Lords'' to begin with. For that reason, even though they're dangerous dens of monsters starving for human men, a countless number of adventurers and thieves challenge the dungeons seeking treasure and knowledge, and most of them end up as prey for the monsters.

Day after day, many human men are brought into monster villages, either intruders or those captured from outside. Men are precious and important beings to the monsters, and they're basically treated kindly, but once brought into their villages, they almost never return from there. Of course, monsters won't let them go once they get their hands on them, so the men are essentially the same as prisoners of the monsters. As their husbands, they become residents of the village and will end up spending their days having sex with them.

Among them, there are also villages that use other methods instead of assault and kidnapping. They trade and intermingle with human towns, and attempt to lure men by advocating how wonderful it is in their village, and how pleasurably and happily the men there are living.

### Monster Girl Encyclopedia World Guide I: Fallen Maidens | The Habitats of Monsters | Monsters That Live With Humans

The one remaining category is monsters that live together in human towns.

In recent years, the trend of ''monster-friendly states'' has been increasing. In these places, there are great numbers of human men, as well as a great influx from the outside, so these monsters don't really have much trouble at all getting a human man. Perhaps because of that reason, these monsters are much more docile compared to wild monsters and the monsters of monster villages, and most of them don't attack humans at random.

However, naturally, they are monsters, and on the inside, they always have a strong desire for human men, and their devilish instinct is to attack and ravish them. Since they live near unwary human men, the desire grows stronger and stronger, until finally it becomes unbearable, and causes the monsters to attack men. Additionally, even if they don't have sex with a particular man, after living together for a long time, many monsters will recognize the man as their ''husband'' before even having sex with him, and when they finally do, the desire, passion, and love they feel towards the man, and the intensity of the sex is often far greater compared to a wild monster.

Many monsters restrain themselves from committing assault and forcible rape, but that doesn't change the fact that they actively seek sex with men. They may try to tempt them into sex with their beautiful looks and magic spells, or, conversely, get the man to ravish them by bombarding him with mamono mana and pheromones, or they may make excuses to demand sex and mana. For that reason, even if the monsters don't attack, men who become prisoners of monsters and become their husbands continue to increase, and they end up spending their days having sex with them. Ultimately, just like with monster villages, the town becomes a place filled with the monsters' love and pleasure.

Furthermore, monsters are beings that have been remade by the Mamono Lord so that they can live with human men, and even monsters of races that originally lived in nature will move to towns, and in the case of those that were born in towns to begin with, they immediately adapt to life in towns and become able to live together.

Some monsters are even spreading their roots to ''anti-monster states.'' Unbeknownst to the people, a great number of monsters settle in places such as the sewers, and abandoned homes, and high-rank monsters with great magical power change into human form and sneak in. Monsters are sneaking into towns while humans are unaware. They imprison the men of anti-monster territories from within, change their women into monsters, and increase their numbers bit by bit. By the time humans realize it, it's too late, and the people will have become prisoners of devilish pleasure. When a town is overflowing with copulating monster couples, eventually the town will transform into a ''Mamono Realm.''