---
title: "Boku ga Boku ni Koufun Suru Wake ga Nai! ~Onee-chan no Otouto Josou Kyouiku~"
description: "\"She really is something, huh... Chisa-senpai...\" \"I guess so...\"  My classmates sigh as they stare through the window at my older sister, Chisa, eating her lun"
image: "https://t.vndb.org/cv/89/28889.jpg"
---

# Boku ga Boku ni Koufun Suru Wake ga Nai! ~Onee-chan no Otouto Josou Kyouiku~

![Boku ga Boku ni Koufun Suru Wake ga Nai! ~Onee-chan no Otouto Josou Kyouiku~](https://t.vndb.org/cv/89/28889.jpg)

**Alternative Title:** ぼくがボクに興奮するわけがないっ！ ～お姉ちゃんの弟女装教育～

**Developer:** Appetite

**Release date:** Jan 23, 2015

**Platform:** Windows, Android, DVD

**Language:** Japanese, English

**Rating:** 6.2/10 (20 votes)

## Description
"She really is something, huh... Chisa-senpai..."
"I guess so..."

My classmates sigh as they stare through the window at my older sister, Chisa, eating her lunch in the courtyard. Bathed in warm sunlight, she’s wearing a radiant smile, completely unfazed by all the eyes on her. There was a time when I felt just a tiny bit proud to be her little brother...

"I’m home."
"Welcome back—"
"Augh..."
"Hmm~? What’s wrong? Getting all shy just because the sister everyone adores came to greet you?"

My sister grins at me as I freeze in surprise.

"So, what shall we do today..?"

All I can do is wait in silence for whatever she’s about to propose. The longer the pause, the more certain I am it’ll be something outrageous...

"That’s right, either way, first you’ll have to strip!"

There it was: the *other face* of my sister that only I know.

[Translated from the [official site](https://www.appetite-game.com/apt_044.html)]

## Characters
### Yamamura Makoto (山村 真琴)
- **Gender:** Male
- **Hair:** Violet, Short
- **Engages in:** Cross-dressing
- **Body:** Trap, Large Penis
- **Eyes:** Violet
- **Role:** Full Brother, Younger Brother
- **Voiced by:** Penpen

### Yamamura Chisa (山村 千紗)
- **Gender:** Female
- **Measurements:** Height: 160cm, Bust-Waist-Hips: 89-56-88cm, E cup
- **Hair:** Brown, Waist Length+
- **Body:** Teen, Slim, Pale
- **Eyes:** Violet
- **Clothes:** Pantyhose, Thigh-high Stockings, Garter Belt Stockings
- **Role:** Full Sister, Older Sister
- **Voiced by:** Shinomiya Hina

## Shops
- [Official Website](http://www.appetite-game.com/aptp_012.html)
- [DLsite](https://www.dlsite.com/pro/work/=/product_id/VJ011402.html)
- [Getchu](http://www.getchu.com/soft.phtml?id=970540)

## Releases
### Japanese
- **2015-01-23**: Boku ga Boku ni Koufun Suru Wake ga Nai! ~Onee-chan no Otouto Josou Kyouiku~ Package Edition - [Official website](http://www.appetite-game.com/apt_044.html), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=21415), [Getchu](http://www.getchu.com/soft.phtml?id=838593)
- **2015-01-23**: Boku ga Boku ni Koufun Suru Wake ga Nai! ~Onee-chan no Otouto Josou Kyouiku~ Download Edition - [Official website](http://www.appetite-game.com/apt_044.html), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=21415), [DLsite](https://www.dlsite.com/pro/work/=/product_id/VJ009021.html), [Melonbooks.co.jp](https://www.melonbooks.co.jp/detail/detail.php?product_id=946479), [DL.Getchu](http://dl.getchu.com/i/item34189), [DMM](https://www.dmm.co.jp/dc/doujin/-/detail/=/cid=d_076219/appetite-001)
- **2015-01-23**: Boku ga Boku ni Koufun Suru Wake ga Nai! ~Onee-chan no Otouto Josou Kyouiku~ Android Edition - [Official website](https://www.appetite-game.com/apt_044.html), [DLsite](https://www.dlsite.com/appx/work/=/product_id/VJ009017.html)
- **2015-05-29**: Boku ga Boku ni Koufun Suru Wake ga Nai! ~Onee-chan no Otouto Josou Kyouiku~ DVDPG - [Getchu](http://www.getchu.com/soft.phtml?id=853157), [DMM](https://www.dmm.co.jp/mono/anime/-/detail/=/cid=wdpg089/)
- **2017-11-24**: Appetite Select Pack - À La Carte Vol. 3 - Package Edition - [Official website](http://www.appetite-game.com/aptp_012.html), [Getchu](http://www.getchu.com/soft.phtml?id=970540)
- **2017-11-24**: Appetite Select Pack - À La Carte Vol. 3 - Download Edition - [Official website](http://www.appetite-game.com/aptp_012.html), [DLsite](https://www.dlsite.com/pro/work/=/product_id/VJ011402.html)

### English
- **2026-06-07**: There's no way I'd get turned on by myself! ～Big Sis's Cross-Dressing Lessons for Her Little Brother～

## Tags
ADV, Protagonist with Voice Acting, Bondage, Only a Single Heroine, Trap Protagonist, Heroine with Zettai Ryouiki, Strap-on Dildos, Protagonist with a Face, Cunnilingus, Pegging, Cowgirl, Sitting Sex, Trap on Female, Protagonist's Older Sister as a Heroine, Blood-related Brother/Sister Incest, Only Blood-related Heroines, Protagonist's Full Sister as a Heroine, Only Protagonist's Sisters as Heroine(s)

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---
*View the full details at [pinovel.net/v16488](https://pinovel.net/v16488).*

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```