---
title: "Boin Shimai no Kojin Jugyou"
description: "He failed university entrance exams. Also, he has never had sex with a girl. His sisters now stand up for him! \"Ok, we'll give you a lesson!\" Like this, they wo"
image: "https://t.vndb.org/cv/76/28476.jpg"
---

# Boin Shimai no Kojin Jugyou

![Boin Shimai no Kojin Jugyou](https://t.vndb.org/cv/76/28476.jpg)

**Alternative Title:** ボイン姉妹の個人授業

**Developer:** Frill

**Release date:** Apr 25, 2008

**Platform:** Windows

**Language:** Japanese

**Rating:** 6.4/10 (24 votes)

## Description
He failed university entrance exams. Also, he has never had sex with a girl. His sisters now stand up for him! "Ok, we'll give you a lesson!" Like this, they work as his tutor during a day and give him a sex lesson at night...

[From ErogeShop]

## Characters
### Akizuki Kaoru (秋月 薫)
- **Gender:** Male
- **Hair:** Brown, Short
- **Body:** Teen, Pale
- **Clothes:** Trousers, Shirt, Swim Shorts
- **Personality:** Pervert, Docile, Taciturn
- **Role:** Full Brother, Kanendosei
- **Eyes:** Pink

### Akizuki Azusa (秋月 梓)
- **Gender:** Female
- **Hair:** Violet, Waist Length+, Spiky Bangs
- **Body:** Pale, Young-adult
- **Eyes:** Violet, Tsurime
- **Clothes:** Earrings, Pendant Necklace, Skirt Suit, Sports Swimsuit, Micro Bikini
- **Role:** Full Sister, Management, Older Sister
- **Engages in:** Teasing, Flirting
- **Personality:** Assertive
- **Voiced by:** Asaki Soyo

### Akizuki Kasumi (秋月 香澄)
- **Gender:** Female
- **Hair:** Pink, Twin Tails, Waist Length+, Spiky Bangs
- **Body:** Pale, Young-adult
- **Clothes:** School Uniform, Shirt, Miniskirt, Sport Bloomers, Blouse, Brooch, Hair Tie, Skirt Suit, Micro Bikini
- **Eyes:** Blue
- **Role:** Full Sister, Teacher, Older Sister
- **Personality:** Kind
- **Engages in:** Cosplay
- **Items:** Book
- **Voiced by:** Motohimiko

### Akizuki Saki (秋月 沙紀)
- **Gender:** Female
- **Hair:** Twin Tails, Waist Length+, Teal, Spiky Bangs
- **Body:** Teen, Pale
- **Clothes:** School Uniform, Sport Bloomers, Thigh-high Stockings, Ribbon Hair Tie, Old Type School Swimsuit
- **Eyes:** Violet, Tsurime
- **Personality:** Stoic, Strange, Genius, Loner
- **Role:** Full Sister, High School Student, Younger Sister
- **Engages in:** Teasing
- **Voiced by:** Sasaki Akari

### Akizuki Yukari (秋月 優佳莉)
- **Gender:** Female
- **Hair:** Pink, Ahoge, Waist Length+, Short, Spiky Bangs, Parted in Middle
- **Body:** Teen, Pale
- **Clothes:** School Uniform, Scarf, Miniskirt, Sport Bloomers, Thigh-high Stockings, Maid's Dress, Belt, Sports Uniform, Spats, Maid's Headdress, Crop Top, Micro Bikini
- **Personality:** Friendly, Energetic
- **Role:** Full Sister, University Student, Older Sister
- **Engages in:** Lacrosse, Cosplay
- **Eyes:** Teal
- **Voiced by:** Tenten

### Natsukawa Miyuki (夏川 深雪)
- **Gender:** Female
- **Hair:** Waist Length+, Green, Braid, Parted to Side
- **Body:** Teen, Pale
- **Eyes:** Blue
- **Clothes:** Mini-dress, Necktie, Beret, Hair Flower
- **Role:** Kanendosei

## Shops
- [Official Website](http://frill.product.co.jp/frill02/index.html)
- [DLsite](https://www.dlsite.com/pro/work/=/product_id/VJ006654.html)
- [Getchu](http://www.getchu.com/soft.phtml?id=485925)

## Releases
### Japanese
- **2008-04-25**: Boin Shimai no Kojin Jugyou - [Official website](http://frill.product.co.jp/frill02/index.html), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=10294), [Getchu](http://www.getchu.com/soft.phtml?id=485925), [DMM](https://www.dmm.co.jp/mono/dmp/-/productlist/=/pid=1336frl5002/)
- **2012-03-02**: Boin Shimai no Kojin Jugyou - Download Edition - [Official website](http://frill.product.co.jp/frill02/index.html), [DLsite](https://www.dlsite.com/pro/work/=/product_id/VJ006654.html), [Gyutto](https://gyutto.com/i/item9304), [Digiket](https://www.digiket.com/work/show/_data/ID=ITM0064020/), [DL.Getchu](http://dl.getchu.com/i/item1003693), [DMM](https://dlsoft.dmm.co.jp/detail/vsat_0130/)

## Tags
ADV, Brother/Sister Incest, Genius Heroine, Oneesan-type Heroine, Male Protagonist, Teacher Heroine, Deredere Heroine, Nukige, High Sexual Content, Group Sex of One Male and Several Females, Harem Ending, Adult Heroine, Big Breast Sizes Heroine, Student Protagonist, School Sports Club Member Heroine, Businesswoman Heroine, Female Domination, Defloration, Footjob, Heroine with Swimsuits, Extremely (un)Lucky Protagonist, Intercrural Sex, Feet Licking, Only Protagonist's Sisters as Heroine(s), Facesitting, Triple Boobjob, Tribadism on Penis, Pantyjob, High School Student Heroine, Protagonist's Full Sister as a Heroine, Protagonist's Younger Sister as a Heroine, Blood-related Brother/Sister Incest, Protagonist's Older Sister as a Heroine

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- [Boin Shimai no Kojin Jugyou](https://pinovel.net/v2071)
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---
*View the full details at [pinovel.net/v2071](https://pinovel.net/v2071).*

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