---
title: "Fukai ni Nemuru Oujo no Abaddon"
description: "'I could still live in peace... if I never learned the truth...'  This tale is set in the haunted Ayakoji Mansion, nestled away deep in a dense, dark forest. Pr"
image: "https://t.vndb.org/cv/00/83700.jpg"
---

# Fukai ni Nemuru Oujo no Abaddon

![Fukai ni Nemuru Oujo no Abaddon](https://t.vndb.org/cv/00/83700.jpg)

**Alternative Title:** 腐界に眠る王女のアバドーン

**Developer:** Sakuraprin

**Release date:** May 3, 2014

**Platform:** Windows

**Language:** English, Japanese

**Rating:** 7.3/10 (198 votes)

## Description
'I could still live in peace... if I never learned the truth...'

This tale is set in the haunted Ayakoji Mansion, nestled away deep in a dense, dark forest. Professor Yamanobe, a close friend of the mansion's owner, arrives at the mansion with a small group of his students to explore and learn the truth behind its many rumors and mysteries. However, they too are engulfed by the innumerable horrors lurking within before long...

It is then that Homura, Professor Yamanobe's son, arrives with a small group of his friends in search of his father. Will they be able to find his father and escape alive? Or will they suffer an unthinkable, sinister fate...?

## Characters
### Yamanobe Homura (山之辺 焔)
He's the son of the archaeologist who investigates the mansion.

PET bottles: he can reduce the fear bar 3 times. You can refill them with water.

Fears: nothing.

[spoiler]He changes to Ayakouji Homura in Yuki's route.[/spoiler]

Family: father (Yamanobe, university professor); mother (deceased).

- **Gender:** Male
- **Measurements:** Height: 179cm, Weight: 70kg
- **Hair:** Blue
- **Clothes:** School Uniform, Dress Shoes, T-shirt, Jeans, Belt, Swim Shorts
- **Engages in:** Cooking, Murder, Investigation, Netori (steals the SO)
- **Subject of:** Amnesia, Mind Control, Insanity, Asphyxia, Completely Avoidable Death
- **Eyes:** Amber, Tsurime
- **Body:** Young-adult, Olive
- **Personality:** Ore, Relaxed, Brave
- **Role:** Husband, Son, Twin Brother, Friend, Childhood Friend, Non-blood-related Son, Bisexual, Younger Brother

### Domon Seijirou (土門 聖二郎)
A member of Homura's father team.

Lighter: he can light up dark places and use it against enemies.

Fears: bugs, beasts, guts.

[spoiler]Rikana is his favourite workmate. He will enter in 'desperation mode' if he watches Rikana's corpse.[/spoiler]

Family: father (doctor); mother; older sister.

- **Gender:** Male
- **Measurements:** Height: 182cm, Weight: 70kg
- **Hair:** Blond, Ahoge, Short, Spiky Bangs
- **Body:** Pale, Young-adult, Freckles
- **Eyes:** Green, Tsurime
- **Clothes:** Hood, Necklace, T-shirt, Vest, Bracelet, Capri Pants, Slippers
- **Personality:** Ore, Outgoing, Arrogant, Flustered
- **Engages in:** Smoking, Murder, Netori (steals the SO)
- **Role:** Medical Doctor, Not a Virgin, Bisexual
- **Subject of:** Netori (their SO is stolen), Completely Avoidable Death

### Hino Yachika (日野 八千花)
Mia's closer friend.

Hairpin: she can open certain chests or door's locks with her hairpin.

Fears: bugs, humanoids, guts.

[spoiler]Mia is more than her best friend. She will enter in 'desperation mode' if she watches Mia's corpse.[/spoiler]

Family: father (carpenter); mother; older brother.

- **Gender:** Female
- **Measurements:** Height: 161cm, Weight: 56kg
- **Hair:** Red, Twin Tails, Long, Spiky Bangs, Sidehair
- **Body:** Teen, Slim, Olive
- **Clothes:** School Uniform, Mini-dress, Hair Ribbon, Necklace, Thigh-high Stockings, Court Shoes, Hairpin, Bracelet
- **Personality:** Selfish, Short-tempered, Rude, Atashi, Superficial, Assertive, Talkative
- **Role:** Friend, Childhood Friend, Bisexual, Younger Sister, Model
- **Engages in:** Teasing, Murder, Netori (steals the SO)
- **Subject of:** Pregnancy, Teasing, Netori (their SO is stolen), Completely Avoidable Death
- **Eyes:** Garnet, Tsurime

### Kazama Kippei (風間 桔平)
Homura's best friend.

Backpack: he can save a maximum of 6 items.

Fears: spirits.

[spoiler]He likes Yachika. He will enter in 'desperation mode' if he watches Yachika's corpse.[/spoiler]

Family: father; mother; little sister (6 years).

- **Gender:** Male
- **Measurements:** Height: 164cm, Weight: 57kg
- **Hair:** Black, Short, Spiky
- **Body:** Teen, Pale
- **Clothes:** School Uniform, Earrings, Headband, Jacket, Shorts, Sports Shoes, Leg Warmers
- **Engages in:** Soccer, Murder, Netori (steals the SO)
- **Eyes:** Green, Tareme
- **Personality:** Ore, Idiot, Friendly, Energetic, Immature, Puffy
- **Role:** Friend, Childhood Friend, Bisexual, Older Brother
- **Subject of:** Netori (their SO is stolen), Completely Avoidable Death

### Mizuishi Rikana (水石 里奏)
A member of Homura's father's team.

Dictionary: she can read certain documents that the others can't.

Fears: humanoids.

Family: father; mother; older brother. However, she lives alone.

- **Gender:** Female
- **Measurements:** Height: 167cm, Weight: 60kg
- **Hair:** Violet, Shoulder-length, Straight, V Bangs, Sidehair
- **Body:** Pale, Young-adult
- **Eyes:** Blue, Jitome
- **Clothes:** Glasses, Headband, Scarf, Sandals, Cravat
- **Personality:** Stoic, Smart, Bookworm, Watashi, Baby Complex, Observant
- **Engages in:** Teasing, Murder, Netori (steals the SO)
- **Subject of:** Pregnancy, Teasing, Netori (their SO is stolen), Completely Avoidable Death
- **Role:** University Student, Bisexual, Younger Sister

### Suzumori Mia (鈴森 未亜)
Homura's friend. She seems to have a crush on him.

First-aid kit: she can cure some illnesses, such as poison or injuries/sprains.

Fears: bugs, spirits, guts.

Family: father; mother.

- **Gender:** Female
- **Measurements:** Height: 153cm, Weight: 52kg
- **Hair:** Curtained, Shoulder-length, Spiky Bangs, Parted in Middle, Orange, Sidehair
- **Body:** Teen, Slim, Pale, Big Breasts
- **Clothes:** School Uniform, Dress, Necklace, Boots, Hair Flower, Blouse, New Type School Swimsuit
- **Personality:** Deredere, Kind, Naive, Watashi
- **Role:** Wife, Friend, Childhood Friend, Nurse, Bisexual
- **Subject of:** Pregnancy, Avoidable Death (obsolete), Netori (their SO is stolen)
- **Eyes:** Pink, Tareme
- **Engages in:** Netori (steals the SO)

### Ayakouji Yuki (ユキ)
Homura finds her in the mansion. She looks like a mysterious girl...

- **Gender:** Female
- **Measurements:** A cup
- **Hair:** Short, Claret
- **Body:** Pale, Kid
- **Role:** Villain, Twin Sister, Ghost, Younger Sister
- **Eyes:** Black, Tareme
- **Clothes:** Dress
- **Personality:** Yandere, Pretending, Kind, Possessive, Brother Complex, Third Person
- **Subject of:** Death, Homicide
- **Engages in:** Murder, Mind Control, Shapeshifting

### Kaneda Seita (金田 正太)
A member of Homura's father team. Shima's best friend.

Flashlight: he can light up dark places.

- **Gender:** Male
- **Hair:** Black
- **Eyes:** Brown, Hosome
- **Body:** Young-adult, Olive
- **Clothes:** Shirt, Shorts
- **Personality:** Ore, Funny
- **Role:** Friend
- **Subject of:** Avoidable Death (obsolete)

### Presence of Fear (恐怖の存在)
She chases you in the haunted house. She always calls Homura, it makes him nervous...

[spoiler]Later is revealed she actually is Ayakouji Mizuki, Homura's older sister.[/spoiler]

- **Gender:** Female
- **Alias:** Naked woman
- **Hair:** Brown, Waist Length+
- **Role:** Villain, Undead, Older Sister
- **Eyes:** Amber, Tsurime
- **Body:** Young-adult, Unnatural Skin Tone
- **Personality:** Yangire
- **Subject of:** Death, Resurrection
- **Engages in:** Murder
- **Clothes:** Naked

### Shima Tetsurou (島 鉄郎)
A member of Homura's father team. Kaneda's best friend.

First-aid kit: he can cure some illnesses, such as poison or injuries/sprains.

[spoiler]He likes secretly Rikana that's why he looks Seijirou like his rival.[/spoiler]

- **Gender:** Male
- **Hair:** Black, Curtained, Short, Parted in Middle
- **Clothes:** Trousers, Glasses, Shirt
- **Role:** Villain, Friend
- **Body:** Young-adult, Olive
- **Personality:** Boku, Pretending, Coward
- **Engages in:** Murder, Shapeshifting, Kidnapping
- **Eyes:** Hosome

### Yamanobe Shoukei (山之辺 承敬)
Homura's father. He's an archaeologist and the leader of his team. He forgot the key which open the door he wanted in the mansion so called his son to bring it to him.

Pipe/Hammer: he can break some walls if he has the hammer.

[spoiler]In the true ending he reveals he's Yuki's twin brother (Ayakouji Homura) but she didn't believe him.[/spoiler]

- **Gender:** Male
- **Hair:** White, Beard, Moustache
- **Clothes:** Dress Shoes, Hat
- **Subject of:** Amnesia, Death, Confinement
- **Eyes:** Amber, Hosome
- **Body:** Adult
- **Role:** Father, Twin Brother, Non-blood-related Father, Younger Brother, Archeologist
- **Engages in:** Investigation, Self-sacrifice
- **Personality:** Protective, Washi, Brave

### Arashiyama Misa (ミサ)
- **Gender:** Female
- **Alias:** Blue hair's girl
- **Hair:** Blue, Ponytail, Long
- **Eyes:** Violet
- **Clothes:** Shorts, Thigh-high Boots
- **Role:** Girlfriend
- **Personality:** Watashi

### Ayakouji Mizuki (ミズキ)
[spoiler]She's Homura's older sister and the woman who chases you in the haunted house.[/spoiler]

- **Gender:** Female
- **Alias:** Little girl
- **Measurements:** A cup
- **Hair:** Violet, Waist Length+
- **Body:** Pale, Kid
- **Eyes:** Amber
- **Clothes:** Dress
- **Subject of:** Death, Resurrection, Sexual Child Abuse
- **Personality:** Naive
- **Role:** Older Sister

### Ginou Takumi (タクミ)
- **Gender:** Male
- **Hair:** Blue
- **Eyes:** Violet
- **Clothes:** Shirt, Chain Jewellery
- **Role:** Boyfriend

### Himejima Hayato (ハヤト)
- **Gender:** Male
- **Hair:** White
- **Clothes:** Trousers, Shirt
- **Eyes:** Black
- **Personality:** Ore
- **Subject of:** Possession

### Ichihashi Nami (ナミ)
- **Gender:** Female
- **Hair:** Blond, Twin Tails, Wavy
- **Eyes:** Amber
- **Clothes:** Shirt, Skirt
- **Role:** Girlfriend
- **Personality:** Third Person

### Koike Ryou (リョウ)
- **Gender:** Male
- **Hair:** Red, Straight
- **Eyes:** Red
- **Clothes:** Shirt, Shorts
- **Personality:** Ore
- **Role:** Boyfriend

### Satonaka Aika (アイカ)
- **Gender:** Female
- **Hair:** Brown, Ponytail
- **Eyes:** Brown
- **Clothes:** Shirt, Miniskirt
- **Personality:** Atashi

### Tanonaka Cathy (キャシー)
- **Gender:** Female
- **Measurements:** A cup
- **Hair:** Blond, Twin Braids
- **Eyes:** Green
- **Role:** Maid
- **Clothes:** Maid's Dress

## Shops
- [Official Website](http://www.sakuraprin.com/img/aba/)
- [Steam](https://store.steampowered.com/app/1539220/)
- [GOG](https://www.gog.com/en/game/abaddon_princess_of_the_decay_decensor_patch)
- [Itch](https://fakku.itch.io/abaddon)
- [DLsite](https://www.dlsite.com/maniax/work/=/product_id/RJ080542.html)
- [Getchu](http://www.getchu.com/soft.phtml?id=873135)

## Releases
### Japanese
- **2011-07-11**: Fukai ni Nemuru Oujo no Abaddon - Trial Edition - [Official website](http://www.sakuraprin.com/img/aba/)
- **2014-05-03**: Fukai ni Nemuru Oujo no Abaddon - Download Edition - [Official website](http://www.sakuraprin.com/img/aba/), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=16150), [DLsite](https://www.dlsite.com/maniax/work/=/product_id/RJ080542.html), [Digiket](https://www.digiket.com/work/show/_data/ID=ITM0118244/), [DMM](https://www.dmm.co.jp/dc/doujin/-/detail/=/cid=d_082977/)
- **2014-07-19**: Fukai ni Nemuru Oujo no Abaddon Ver 1.10 - [Official website](http://www.sakuraprin.com/img/aba/)
- **2015-01-24**: Fukai ni Nemuru Oujo no Abaddon Ver 1.20 - [Official website](http://www.sakuraprin.com/img/aba/)
- **2015-07-10**: Fukai ni Nemuru Oujo no Abaddon Ver 1.30 - [Official website](http://www.sakuraprin.com/img/aba/)
- **2015-10-16**: Fukai ni Nemuru Oujo no Abaddon - Package Edition - [Official website](http://www.sakuraprin.com/img/aba/), [Melonbooks.co.jp](https://www.melonbooks.co.jp/detail/detail.php?product_id=139707), [Getchu](http://www.getchu.com/soft.phtml?id=873135), [Toranoana](https://ec.toranoana.shop/tora/ec/item/040030347232/)

### English
- **2020-10-30**: Abaddon: Princess of the Decay - Demo - [Official website](https://web.archive.org/web/20201101052533/https://store.fakku.net/pages/abaddon), [Steam](https://store.steampowered.com/app/1726960/), [SteamDB](https://steamdb.info/app/1726960/info/), [Itch.io](https://fakku.itch.io/abaddon), [Fakku](https://www.fakku.net/games/abaddon-princess-of-the-decay-english)
- **2021-10-19**: Abaddon: Princess of the Decay - Censored Edition - [Steam](https://store.steampowered.com/app/1539220/), [SteamDB](https://steamdb.info/app/1539220/info/), [GOG](https://www.gog.com/en/game/abaddon_princess_of_the_decay), [GOG DB](https://gogdb.org/product/1480921455), [Itch.io](https://fakku.itch.io/abaddon)
- **2021-10-19**: Abaddon: Princess of the Decay - Uncensored Edition - [JAST USA](https://jastusa.com/games/fakk005/abaddon:-princess-of-the-decay), [Kagura Games](https://www.kaguragames.com/product/abaddon-princess-of-the-decay/), [Fakku](https://www.fakku.net/games/abaddon-princess-of-the-decay-english)
- **2021-10-19**: Abaddon: Princess of the Decay - Decensor Patch - [Official website](https://www.dropbox.com/s/8gchr8es4jqn3n5/Abaddon_Decensor_Patch_Nov20.zip?dl=0), [GOG](https://www.gog.com/en/game/abaddon_princess_of_the_decay_decensor_patch), [GOG DB](https://gogdb.org/product/1106846044)

## Tags
Horror, Fear of Death, Terrorized by Monsters, ADV, RPG, Cthulhu Mythos, Lesbian Sex, Male on Male Sex, Completely Avoidable Rape, Brother/Sister Incest, Blood-related Brother/Sister Incest, Girl x Girl Romance, Boy x Boy Romance, Male Protagonist, Multiple Endings, Enforced Playing Order, Bloody Scenes, Guro, Life and Death Drama, Father Support Character, Tentacle Rape, Deredere Heroine, Protagonist's Childhood Friend as a Heroine, Protagonist's Sister as a Support Character, Reverse Rape, Madness, Confinement, Map Movement, Western-style Manor, Evil Route, Time Loop, Interactive Adventure Game, Group Sex of One Female and Several Males, Harem Ending, New Game Plus, Unlockable Routes, Undead, Netorare, Netori, Forest, Multiple Route Mystery, Branching Plot, Unlockable Harem Ending, Lesbian Rape, Haunted House, Bad Ending(s), Completely Avoidable Netorare, Protagonist with a Face, Side Portraits, Male on Male Rape, Only Virgin Heroines, Twin Tail Heroine, Bad Endings with Story, Game Over, Missionary Position, Protagonist's Childhood Friend as a Hero, Protagonist's Twin as a Heroine, Completely Avoidable Heroine Rape, Short Sexual Scenes, Heroine with Ahoge, Multiple Penetration, Erotic Spanking, High Amount of Bad Endings, Shapeshifting, Cunnilingus, Memory Alteration, More Than Seven Endings, No Backlog, Sacrifice, Voyeurism, Twincest, Doggy Style, Female Ejaculation, Central Heroine, Sexual Child Abuse, Homicide, Ending List, Multiple Credit Rolls, Threesome Ending, Varied Title Screens, Bisexual Heroine, Brocon Support Character, Completely Avoidable Protagonist Rape, Sitting Sex, Piledriver, Ahegao, Production of Pornography (Amateur), Bisexual Hero, Bisexual Protagonist, Completely Avoidable Hero Rape, Strangulation Sex, Heroine with Baby Complex, Ghost Support Character, Amnesiac Protagonist, Seke Protagonist, Only Avoidable Heroine Having Sex with Others, Major Antagonist, Stuck in Meatwall, Pixel Art, Pregnancy Good Ending, Penile Masturbation, Completely Avoidable Hero Death, Completely Avoidable Protagonist Death, Protagonist's Younger Sister as a Heroine, Heroine with Big Breasts, Survival Focus, Both Male and Female Love Interests, Character Movement, Rape by Undead, Nukige, Sexual Content

## More Games from Sakuraprin
- [Fukai ni Nemuru Oujo no Abaddon](https://pinovel.net/v13066)
- [Kazuma to Kugayama no Kimyou na Haikou Tanken](https://pinovel.net/v37795)
- [Gakuen Abaddon -THE END IS NEAR-](https://pinovel.net/v54862)

---
*View the full details at [pinovel.net/v13066](https://pinovel.net/v13066).*

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