---
title: "Onee-san ga Oshiete A-Ge-Ru"
description: "Main character's sister becomes unbearable. His childhood friend organizes a special study program for his sister with a tutor. This program is much wider than "
image: "https://t.vndb.org/cv/04/18304.jpg"
---

# Onee-san ga Oshiete A-Ge-Ru

![Onee-san ga Oshiete A-Ge-Ru](https://t.vndb.org/cv/04/18304.jpg)

**Alternative Title:** お姉さんが教えてア・ゲ・ル

**Aliases:** ONEESAN ga OSHIETEAGERU

**Developer:** Bianca

**Release date:** Nov 22, 2005

**Platform:** Windows, macOS

**Language:** Japanese

## Description
Main character's sister becomes unbearable. His childhood friend organizes a special study program for his sister with a tutor. This program is much wider than just school education disciplines. Protagonist gets really curious about these special lessons...

[From [vndbreview](https://vndbreview.blogspot.com/2019/11/vn-of-month-november-2005-sharin-no.html)]

## Characters
### Chinatsu (千夏)
- **Gender:** Female
- **Hair:** Pink, Shoulder-length
- **Clothes:** Pajamas, Miniskirt, Thigh-high Stockings, Hoodie
- **Eyes:** Pink

### Yuki (由紀)
- **Gender:** Female
- **Hair:** Black, Waist Length+
- **Eyes:** Violet
- **Clothes:** Skirt, Turtleneck Tank Top
- **Role:** Childhood Friend

## Shops
- [Official Website](https://web.archive.org/web/20140909231632/http://www.bb5.jp/pr/899/)
- [DLsite](https://www.dlsite.com/pro/work/=/product_id/VJ005378.html)

## Releases
### Japanese
- **2005-11-22**: Onee-san ga Oshiete A-Ge-Ru - Download Edition - [Official website](https://web.archive.org/web/20140909231632/http://www.bb5.jp/pr/899/), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=7245), [DLsite](https://www.dlsite.com/pro/work/=/product_id/VJ005378.html), [Gyutto](https://gyutto.com/i/item49054), [Digiket](https://www.digiket.com/work/show/_data/ID=ITM0049120/), [DL.Getchu](http://dl.getchu.com/i/item1002912), [DMM](https://dlsoft.dmm.co.jp/detail/ggs_0483/)
- **2006-03-24**: Onee-san ga Oshiete A-Ge-Ru - [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=7245)

## Tags
ADV, Protagonist's Cousin as a Heroine, Cousin Incest, Oneesan-type Heroine, Male Protagonist, Protagonist's Childhood Friend as a Heroine, High Sexual Content, Student Heroine, Under the Same Roof, Heroine with Zettai Ryouiki, Defloration, Boobjob, Sixty-nine, Blowjob, Handjob, Heroine with Intake Hairstyle, Cunnilingus, Doggy Style, Female Ejaculation, Fingering, Cowgirl, Reverse Cowgirl, Standing Sex, Soapy Massage

## More Games from Bianca
- [Onee-san ga Oshiete A-Ge-Ru](https://pinovel.net/v6726)
- [Hitozuma Yuugi](https://pinovel.net/v350)
- [In'yoku Oyako](https://pinovel.net/v355)

---
*View the full details at [pinovel.net/v6726](https://pinovel.net/v6726).*

```json
{"@context":"https://schema.org","@type":"VideoGame","@id":"https://pinovel.net/v6726#game","name":"Onee-san ga Oshiete A-Ge-Ru","description":"Main character's sister becomes unbearable. His childhood friend organizes a special study program for his sister with a tutor. This program is much wider than ","url":"https://pinovel.net/v6726","image":"https://t.vndb.org/cv/04/18304.jpg","author":{"@type":"Organization","name":"Bianca"}}
```