---
title: "Zettai ★ Imouto Shijou Shugi!!"
description: "Shinichi has many sisters who treat him coldly. But almost all of his sisters leave the house to work or study, and his life becomes peaceful. He sometimes gets"
image: "https://t.vndb.org/cv/47/28847.jpg"
---

# Zettai ★ Imouto Shijou Shugi!!

![Zettai ★ Imouto Shijou Shugi!!](https://t.vndb.org/cv/47/28847.jpg)

**Alternative Title:** 絶対★妹至上主義！！

**Aliases:** 絶妹, ぜついも, zetsuimo

**Developer:** Nounai Kanojo

**Release date:** Jan 26, 2007

**Platform:** Windows, DVD, Website

**Language:** Japanese

**Rating:** 6.5/10 (40 votes)

## Description
Shinichi has many sisters who treat him coldly. But almost all of his sisters leave the house to work or study, and his life becomes peaceful. He sometimes gets confused by Minato's deeds, who is the youngest sister, but he somehow enjoys his life. But a turning point comes suddenly...

During spring holiday, his father adopts a girl, Amane. He welcomes her since she is quiet. But Madoka, his younger sister, comes back to his house, and controls him. He can't stand it anymore, and decides to get back the power!

[From ErogeShop]

## Characters
### Tomosato Shin'ichi (友里 信一)
The only son and the fourth child in Tomosato household.

- **Gender:** Male
- **Hair:** Brown, Short, Parted in Middle
- **Body:** Teen, Slim, Pale
- **Personality:** Donkan, Hetare, Ore, Lazy, Naive, Grumbler, Sister Complex, Emotional, Flustered, Dishonest, Childishly Violent
- **Engages in:** Cooking, Marriage Proposal, Long Distance Relationship, Fake Relationship
- **Subject of:** Blackmail, Illness, Being Drugged, Seduction
- **Role:** Husband, Father, Full Brother, Boyfriend, Friend, Childhood Friend, Non-blood-related Brother, Classmate, Younger Brother, Older Brother, Sexual Submissive, Half-brother, Sex Friend, Butt Monkey, Twelfth Grader

### Kirizaki Yukari (霧崎 ゆかり)
Tomosato siblings' childhood friend who always takes care of them, especially in cooking.

- **Gender:** Female
- **Alias:** ゆかりん
- **Hair:** Blue, Shoulder-length, Side Tail
- **Body:** Teen, Slim, Pale, Medium Breasts
- **Personality:** Hard Worker, Deredere, Stoic, Relaxed, Mature, Watashi
- **Engages in:** Cooking, Drinking
- **Clothes:** Apron, Thigh-high Stockings, Nurse Uniform, Hairpin, Naked Apron, Nurse's Cap
- **Role:** Full Sister, Childhood Friend, Waitstaff, Senpai, Kouhai, Neighbor, Younger Sister, Part-time Worker, Imouto Act
- **Eyes:** Cyan
- **Voiced by:** Kasuga An

### Tomosato Amane (友里 海音)
The youngest child in Tomosato househould and Shin'ichi's youngest sister. She was adopted by Shin'ichi's father because her parents died early in an accident. 

[spoiler]In reality, she is an illegitimate child of Shin'ichi's father, which makes her a half-sibling to the Tomosato siblings. Amane's mother had to raise her alone, leading to a difficult and challenging upbringing. Consequently, she harbors a deep-seated desire for revenge and seeks to dismantle the Tomosato family.[/spoiler]

- **Gender:** Female
- **Hair:** White, Waist Length+
- **Body:** Teen, Slim, Pale, Medium Breasts
- **Role:** Orphan, Wife, Mother, Girlfriend, Non-blood-related Sister, Schoolmate, Younger Sister, Half-sister, Lonely, Illegitimate Child, Tenth Grader
- **Engages in:** Cooking, Hypnotism, Revenge, Seduction, Drugging
- **Eyes:** Red, Tareme
- **Clothes:** Pantyhose, Gothic, Ribbon Hair Accessory, Nightgown
- **Personality:** Deredere, Pretending, Strange, Vindictive, Sly, Watakushi, Chuunibyou, Assertive, Keigo, Desu wa
- **Subject of:** Bullying, Psychological Trauma, Child Abandonment, Marriage Proposal
- **Items:** Stuffed Toy, Doll
- **Voiced by:** Iwaizumi Mai

### Tomosato Madoka (友里 円)
The sixth child in Tomosato household and Shin'ichi's youngest blood-related sister.

- **Gender:** Female
- **Hair:** Red, Odango, Twin Tails, Waist Length+, Straight, Parted in Middle, Sidehair
- **Body:** Teen, Slim, Pale, Left Handed, Small Breasts
- **Clothes:** Sweater, Miniskirt, Lolita, Over The Knee Socks
- **Personality:** Hard Worker, Tsundere, Smart, Disciplinarian, Watashi, Family Oriented
- **Engages in:** Cooking, Drinking
- **Eyes:** Violet
- **Subject of:** Hypnotism, Being Drugged, Mental Age Regression
- **Role:** Full Sister, Girlfriend, Childhood Friend, Classmate, Kouhai, Younger Sister, Older Sister, Half-sister, Sex Friend, Tenth Grader, Twelfth Grader
- **Voiced by:** Kanzaki Kanari

### Tomosato Minato (友里 湊)
The fifth child in Tomosato's household.

- **Gender:** Female
- **Hair:** Brown, Twin Tails, Shoulder-length, Side Tail
- **Body:** Teen, Slim, Pale
- **Eyes:** Amber
- **Clothes:** T-shirt, Jeans, Sport Bloomers, Hairpin, Rubber Band With Beads, Tracksuit, Shimapan
- **Personality:** Lazy, Carefree, Tomboy, Grumbler, Mischievous, Atashi, Emotional, Whimsical, Childishly Violent, Cheerful
- **Engages in:** Drinking, Blackmail, Baseball, Long Distance Relationship, Fake Relationship
- **Role:** Full Sister, Girlfriend, Childhood Friend, Younger Sister, Older Sister, Half-sister, Eleventh Grader
- **Subject of:** Being Drugged
- **Voiced by:** Kanematsu Yuka

### Kirizaki Nobuhiko (霧崎 伸彦)
Yukari's older brother.

- **Gender:** Male
- **Hair:** Blue, Short
- **Clothes:** Trousers, Jacket
- **Personality:** Pervert, Sister Complex
- **Role:** Full Brother, Childhood Friend, Classmate, Neighbor, Older Brother, Twelfth Grader
- **Eyes:** Cyan
- **Engages in:** Not Sexually Involved

## Shops
- [Official Website](http://www.noukano.com/zetuimo/index.htm)
- [DLsite](https://www.dlsite.com/pro/work/=/product_id/VJ005023.html)
- [Getchu](http://www.getchu.com/soft.phtml?id=678022)

## Releases
### Japanese
- **2007-01-26**: Zettai ★ Imouto Shijou Shugi!! - First Press Edition - [Official website](http://www.noukano.com/zetuimo/index.htm), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=8403), [Getchu](http://www.getchu.com/soft.phtml?id=332485)
- **2007-11-16**: Zettai ★ Imouto Shijou Shugi!! - Regular Edition - [Official website](http://www.noukano.com/zetuimo/index.htm)
- **2010-05-27**: Zettai ★ Imouto Shijou Shugi!! - DVDPG - [Official website](https://web.archive.org/web/20161209072326/http://www.dennoclub.com/TitleList/dcpg/DCPG216/dcpg216.htm), [Getchu](http://www.getchu.com/soft.phtml?id=678022), [DMM](https://www.dmm.co.jp/mono/anime/-/detail/=/cid=h_294dcpg216/)
- **2010-09-17**: Zettai ★ Imouto Shijou Shugi!! - Download Edition - [Official website](http://www.noukano.com/zetuimo/index.htm), [DLsite](https://www.dlsite.com/pro/work/=/product_id/VJ005023.html), [Gyutto](https://gyutto.com/i/item3952), [Digiket](https://www.digiket.com/work/show/_data/ID=ITM0044759/), [DL.Getchu](http://dl.getchu.com/i/item1002552), [DMM](https://dlsoft.dmm.co.jp/detail/kaku_0044/)
- **2020-04-24**: Zettai ★ Imouto Shijou Shugi!! - [Official website](https://web.archive.org/web/20210415110318/https://oo.parts/title/YEae3xmY47T4sczTBBmR)

## Tags
Sexual Content, ADV, School, Blood-related Brother/Sister Incest, Non-blood-related Brother/Sister Incest, Romance, Comedy, Imouto-type Heroine, Male Protagonist, Modern Day, Reverse Rape, High Sexual Content, Group Sex of One Male and Several Females, Early Sexual Content, Under the Same Roof, Heroine with Zettai Ryouiki, Hetare Protagonist, Tomboy Heroine, Tsundere Heroine, Branching Plot, Bad Ending(s), Female Domination, Defloration, Only Virgin Heroines, Wake-up Sex, Pretending Heroine, Twin Tail Heroine, Super Deformed CGs, Siscon Protagonist, Tribadism on Penis, Kneepit Sex, Pantyjob, High School Student Heroine, Sex with Protagonist Only, Donkan Protagonist, Protagonist's Non-blood-related Sister as a Heroine, Protagonist's Full Sister as a Heroine, Protagonist's Younger Sister as a Heroine, Protagonist's Half-sister as a Heroine, Consumption of Pornography, Childishly Violent Protagonist, Naked Heroine with Apron, Unbeknown Incest, Stockings, Inbreeding, Single Blowjob, Deredere Heroine, Single Footjob, Cowgirl, Single Handjob, Vaginal Fingering, Doggy Style, Bathroom Sex, Quickie Fix Position, Waitress Heroine, Heroine with Gothic Look, Heroine with Tights, Sixty-nine, Sitting Sex, Chuunibyou Heroine, Reverse Cowgirl, White Haired Heroine, Missionary Position, Butterfly, Cunnilingus, Single Boobjob, Outdoor Sex, Heroine with Small Breasts (Non-Loli), Heroine with Sport Bloomers, Vaginal Masturbation, Childishly Violent Heroine, Mischievous Heroine, Onahole, Protagonist's Childhood Friend as a Heroine

## More Games from Nounai Kanojo
- [Zettai ★ Imouto Shijou Shugi!!](https://pinovel.net/v1464)
- [Osananajimi wa Bed Yakuza!](https://pinovel.net/v610)
- [Yamitsuki!](https://pinovel.net/v778)
- [Asahi to Tsugumi no Shinkon Seikatsu ~Osananajimi wa Bed Yakuza! - Another~](https://pinovel.net/v1907)
- [Sister Magic!](https://pinovel.net/v1637)
- [Usodere!](https://pinovel.net/v2933)
- [Zettai ★ Imouto Genri Shugi!!](https://pinovel.net/v4599)
- [Josou Sanmyaku](https://pinovel.net/v6589)
- [Yome Juu!](https://pinovel.net/v9175)
- [Josou Kaikyou](https://pinovel.net/v12273)
- [Uke Shokushu](https://pinovel.net/v12692)
- [Ren'ai Made Sentakushi Hitotsu](https://pinovel.net/v13892)
- [Josou Gakuen](https://pinovel.net/v15446)
- [Namaiki!](https://pinovel.net/v16405)
- [Kenja no Okuri Imouto](https://pinovel.net/v18283)

---
*View the full details at [pinovel.net/v1464](https://pinovel.net/v1464).*

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