---
title: "Ane o Tasukeru Tame Nokosareta Shimai o Kegasu Haitoku no Hibi"
description: "Ogura Shinichi lost his mother as a child and gained a new family through his father's remarriage to a stepmother and her three daughters. Despite his father an"
image: "https://t.vndb.org/cv/16/140716.jpg"
---

# Ane o Tasukeru Tame Nokosareta Shimai o Kegasu Haitoku no Hibi

![Ane o Tasukeru Tame Nokosareta Shimai o Kegasu Haitoku no Hibi](https://t.vndb.org/cv/16/140716.jpg)

**Alternative Title:** 姉を助けるため残された姉妹を穢す背徳の日々

**Developer:** Guilty / material

**Release date:** Apr 25, 2014

**Platform:** Windows, DVD

**Language:** Japanese

**Rating:** 6.7/10 (55 votes)

## Description
Ogura Shinichi lost his mother as a child and gained a new family through his father's remarriage to a stepmother and her three daughters. Despite his father and stepmother being frequently absent due to work, they live a peaceful life together. However, their tranquility is shattered when the oldest daughter, Kasumi, is kidnapped. The kidnapper demands that Shinichi violate one of his younger sisters in exchange for Kasumi's safety. Initially doubtful, Shinichi is shown a distressing video of Kasumi that takes a toll on his mental state. Succumbing to the kidnapper's influence, he violates his second sister, Satomi, and even third sister, Yuu. Sadly, Kasumi remains captive, and the situation worsens as Shinichi's childhood friend, Makoto, and his teacher, Naoko, become involved. Isolated from their parents and the authorities, Shinichi and his sisters experience a gradual erosion of their sanity. How long will this abnormal and never-ending nightmare continue?

## Characters
### Ogura Shin'ichi (小倉 信一)
- **Gender:** Male
- **Role:** Childhood Friend, Non-blood-related Brother, Classmate, Senpai, High School Student, Younger Brother
- **Subject of:** Confinement, Kidnapping, Being Drugged, Fainting, Attempted Homicide
- **Personality:** Protective

### Houjou Naoko (北条 奈桜子)
- **Gender:** Female
- **Hair:** Brown, Shoulder-length
- **Clothes:** School Uniform, Naked Apron, Torn Pantyhose (damaged)
- **Engages in:** Cooking
- **Eyes:** Grey
- **Subject of:** Nymphomania, Sexual Corruption, Erotic Photography
- **Personality:** Friendly, Kind, Naive, Serious
- **Role:** Girlfriend, Senpai, Popular, Homeroom Teacher
- **Body:** Big Breasts
- **Voiced by:** Kano Milk

### Ogura Kasumi (小倉 佳澄)
- **Gender:** Female
- **Hair:** Blond, Waist Length+
- **Engages in:** Cooking, Escape From Confinement
- **Role:** Full Sister, Step Sister, Girlfriend, University Student, Older Sister
- **Subject of:** Torture, Confinement, Kidnapping, Being Drugged
- **Personality:** Relaxed, Kind
- **Clothes:** Collar
- **Eyes:** Garnet
- **Body:** Big Breasts
- **Voiced by:** Katakura Hina

### Ogura Satomi (小倉 里未)
- **Gender:** Female
- **Hair:** Red, Shoulder-length
- **Eyes:** Violet
- **Subject of:** Molesting, Being Drugged, Sexual Corruption, Erotic Photography
- **Role:** Step Sister, Friend, Classmate, High School Student, Younger Sister, Older Sister
- **Body:** Big Breasts
- **Engages in:** Bad Cooking
- **Voiced by:** Asaka Natsu

### Ogura Yuu (小倉 優)
- **Gender:** Female
- **Hair:** Black, Shoulder-length
- **Eyes:** Brown
- **Engages in:** Cooking
- **Role:** Full Sister, Step Sister, Kouhai, High School Student, Younger Sister, Secret Girlfriend
- **Personality:** Timid, Kind, Docile
- **Clothes:** Swimsuit, Ribbon Hair Accessory
- **Subject of:** Erotic Photography
- **Body:** Medium Breasts
- **Voiced by:** Harukawa Akari

### Sakurai Makoto (桜井 真琴)
- **Gender:** Female
- **Hair:** Shoulder-length, Orange
- **Subject of:** Nymphomania, Sexual Corruption, Erotic Photography
- **Personality:** Friendly, Kind, Naive, Loyal
- **Role:** Girlfriend, Friend, Childhood Friend, Classmate, High School Student
- **Eyes:** Garnet
- **Body:** Big Breasts
- **Voiced by:** Sakura Momoka

## Shops
- [Official Website](http://www.guilty-soft.com/product/haitoku/index.html)
- [DLsite](https://www.dlsite.com/pro/work/=/product_id/VJ008516.html)
- [Getchu](http://www.getchu.com/soft.phtml?id=833324)

## Releases
### Japanese
- **2014-03-07**: Ane o Tasukeru Tame Nokosareta Shimai o Kegasu Haitoku no Hibi - Trial Edition - [Official website](http://www.guilty-soft.com/product/haitoku/download.html)
- **2014-03-28**: Ane o Tasukeru Tame Nokosareta Shimai o Kegasu Haitoku no Hibi - H Scene Trial Edition - [Official website](http://www.guilty-soft.com/product/haitoku/download.html)
- **2014-04-25**: Ane o Tasukeru Tame Nokosareta Shimai o Kegasu Haitoku no Hibi - Package Edition - [Official website](http://www.guilty-soft.com/product/haitoku/index.html), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=20176), [Getchu](http://www.getchu.com/soft.phtml?id=799014), [DMM](https://www.dmm.co.jp/mono/pcgame/-/detail/=/cid=1895will314/)
- **2014-04-25**: Ane o Tasukeru Tame Nokosareta Shimai o Kegasu Haitoku no Hibi - Hakudaku x Harem Patch - [Official website](http://www.guilty-soft.com/product/haitoku/download.html), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=20176)
- **2014-05-30**: Ane o Tasukeru Tame Nokosareta Shimai o Kegasu Haitoku no Hibi - Download Edition - [Official website](http://www.guilty-soft.com/product/haitoku/index.html), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=20176), [DLsite](https://www.dlsite.com/pro/work/=/product_id/VJ008516.html), [Gyutto](https://gyutto.com/i/item124682), [DMM](https://dlsoft.dmm.co.jp/detail/will_0106/)
- **2014-10-30**: Ane o Tasukeru Tame Nokosareta Shimai o Kegasu Haitoku no Hibi - DVDPG - [Official website](https://web.archive.org/web/20170123070126/http://dennoclub.com/TitleList/dcpg/DCPG323/dcpg323.htm), [Getchu](http://www.getchu.com/soft.phtml?id=833324), [DMM](https://www.dmm.co.jp/mono/anime/-/detail/=/cid=h_294dcpg323/)

## Tags
ADV, Incest, Non-blood-related Brother/Sister Incest, Imouto-type Heroine, Male Protagonist, Multiple Endings, Teacher Heroine, Protagonist's Childhood Friend as a Heroine, Nukige, Bondage, Protagonist's Non-blood-related Sister as a Heroine, Confinement, Student Heroine, Adult Heroine, Student Protagonist, Blackmail, Vibrators, Hidden Vibrator, Remote-controlled Vibrator, Defloration, Sex in Public Places, Only Virgin Heroines, Missionary Position, Sixty-nine, Sounds of Copulation, Naked Heroine with Apron, High School Student Protagonist, Sex in a Vehicle, Doggy Style, University Student Heroine, Kidnapping, Outdoor Sex, Naked Sprites, Clothed Male Naked Female, Cowgirl, Molestation on Public Transport, Standing Sex, Sitting Sex, Butterfly, Piledriver, Bathroom Sex, Non-consensual Erotic Humiliation, Rape by Proxy, Sexual Blindfold, Quickie Fix Position, Boobs on Glass, Only One Bad Ending, Sex at School, Anal Fingering, Sex on Toilet, Only Avoidable Heroine Having Sex with Others, Vaginal Masturbation, Anal Sex, High School Student Heroine, Heroine with Big Breasts, Vaginal Object Insertion, Protagonist's Older Sister as a Heroine, Protagonist's Younger Sister as a Heroine

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---
*View the full details at [pinovel.net/v14549](https://pinovel.net/v14549).*

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