---
title: "Zatsuon Ryouiki"
description: "Naoto Matsumoto is a young man who suffers from a peculiar memory loss: he does not remember his life before he was fourteen. Apparently both his parents died, "
image: "https://t.vndb.org/cv/15/11615.jpg"
---

# Zatsuon Ryouiki

![Zatsuon Ryouiki](https://t.vndb.org/cv/15/11615.jpg)

**Alternative Title:** 雑音領域

**Developer:** D.O. Co., Ltd.

**Release date:** Dec 16, 1994

**Platform:** Windows, FMT, P98

**Language:** Japanese

**Rating:** 6.7/10 (12 votes)

## Description
Naoto Matsumoto is a young man who suffers from a peculiar memory loss: he does not remember his life before he was fourteen. Apparently both his parents died, and he was taken in by another family. On one rainy day, during a trip through the countryside, Naoto's car reaches a dead end on the road, and he and his stepsister are invited by a maid to spend the night in a large secluded mansion. Naoto witnesses increasingly strange and violent events and begins to recollect his lost memories.

[From [Mobygames](http://www.mobygames.com/game/pc98/zatsuon-ryiki-)]

## Characters
### Matsumoto Naoto (松本直人)
- **Gender:** Male
- **Personality:** Donkan, Emotional
- **Role:** Orphan, Writer, Non-blood-related Brother, Non-blood-related Son, Not a Virgin
- **Subject of:** Amnesia, Accident, Genetic Research, Malevolent Possession, Human Subject Research, Being Drugged, Seduction, Memory Alteration, Completely Avoidable Death
- **Engages in:** Driving, Torture, Assault, Arson, Attempted Murder, Escape From Confinement, Avoidable Manslaughter

### Ikeuchi Mariko (池内 真理子)
- **Gender:** Female
- **Hair:** Black, Brown, Long, Curtained, Parted in Middle
- **Eyes:** Red
- **Role:** Non-blood-related Sister, Not a Virgin
- **Subject of:** Illness, Manipulation, Completely Avoidable Death
- **Personality:** Jealous
- **Engages in:** Escape From Confinement

### Kamura Mai (香邑 舞)
- **Gender:** Female
- **Subject of:** Bullying, Clinical Depression, Human Subject Research
- **Role:** Twin Sister, Younger Sister
- **Personality:** Timid, Sensitive
- **Engages in:** Suicide Attempt, Avoidable Manslaughter

### Kamura Makie (香邑 蒔絵)
- **Gender:** Female
- **Hair:** Black, Long
- **Subject of:** Assault, Torture, Genetic Research, Avoidable Death (obsolete)
- **Personality:** Secretive, Arrogant, Stubborn, Jealous, Manipulative, Sadist
- **Role:** Full Sister, Head of Household, Not a Virgin, Older Sister, Ojousama
- **Engages in:** Torture, Drugging, Avoidable Murder
- **Clothes:** Torn Clothing

### Kamura Misao (香邑  操)
- **Gender:** Female
- **Aliases:** 久美子, Kumiko
- **Hair:** Blue, Violet, Wavy, Parted in Middle
- **Role:** Villain, Mother, Secret Identity, Older Sister
- **Engages in:** Cooking, Blackmail, Torture, Avoidable Murder, Avoidable Suicide
- **Eyes:** Amber
- **Items:** Handgun
- **Personality:** Friendly, Kind, Haraguro, Sensitive
- **Subject of:** Illness, Genetic Research, Weakness, Malevolent Possession, Human Subject Research, Memory Alteration, Manipulation

### Kamura Mizuho (香邑 瑞穂)
- **Gender:** Female
- **Hair:** Short, Grey
- **Personality:** Pervert, Masochist
- **Subject of:** Insanity, Torture, Wounding, Genetic Research, Human Subject Research
- **Engages in:** Blackmail, Avoidable Murder
- **Role:** Not a Virgin

### Kamura Yui (香邑 唯)
- **Gender:** Female
- **Personality:** Selfish, Haraguro, Jealous
- **Engages in:** Bullying, Avoidable Murder, Animal Abuse
- **Role:** Twin Sister, Younger Sister
- **Subject of:** Human Subject Research

### Kumiko (久美子)
- **Gender:** Female
- **Aliases:** Woman, 女, Onna
- **Hair:** Black
- **Personality:** Strange, Mysterious
- **Engages in:** Benevolent Possession

### Yayoi (弥生)
- **Gender:** Female
- **Engages in:** Cooking, Escape From Confinement, Avoidable Suicide
- **Body:** Scar
- **Role:** Maid, Not a Virgin
- **Subject of:** Torture, Wounding, Attempted Homicide
- **Clothes:** Maid's Dress, Pet Collar
- **Personality:** Timid

## Shops
- [Official Website](http://www.do-game.co.jp/r18/products/%E9%9B%91%E9%9F%B3%E9%A0%98%E5%9F%9F/)
- [Getchu](http://www.getchu.com/soft.phtml?id=7502)

## Releases
### Japanese
- **1994-12-16**: Zatsuon Ryouiki
- **1995-02-17**: Zatsuon Ryouiki - PC-9821 CD Edition
- **1996-01-19**: Zatsuon Ryouiki - [Official website](https://web.archive.org/web/20040605035111/http://www.do-game.co.jp:80/release/soft/zatsuon/index.htm), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=2042)
- **2001-08-31**: Zatsuon Ryouiki D.O.Classics Vol.1 - [Official website](http://www.do-game.co.jp/r18/products/%E9%9B%91%E9%9F%B3%E9%A0%98%E5%9F%9F/), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=1644), [Getchu](http://www.getchu.com/soft.phtml?id=7502)

## Tags
Horror, Sexual Content, ADV, Completely Avoidable Rape, Maid Heroine, Male Protagonist, Amnesia, Bloody Scenes, Suicide, Western-style Manor, Group Sex of One Male and Several Females, Heroine with Sexual Experience, Donkan Protagonist, Sex Involving Drugs, Utsuge, Defloration, Secret Society, Genetic Research, Death of Heroine, Bad Endings with Story, Death of Protagonist, BDSM, High Amount of Bad Endings, Object Insertion, More Than Seven Endings, Betrayal, Homicide, Ending List, Unbeknown Incest, Censored Text, Perverted Heroine, Avoidable Death of Heroine (obsolete), Under the Same Roof, Guro, Ejaculation Choice, Music Recollection, Secret Identity, Torture, Torture Chamber, Clinical Depression, Hair Pulling (Sexual), Possession, Writer Protagonist, Blind Choices, Multiple Route Mystery, Mandatory Choice Between Voices OR Subtitles

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---
*View the full details at [pinovel.net/v9173](https://pinovel.net/v9173).*

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