---
title: "Onii-chan Daisuki!"
description: "It's summer vacation, and Kouji was asked by his uncle to take care of his house and daughter Mizuki while he's on a trip. All alone with his beloved cousin, Ko"
image: "https://t.vndb.org/cv/55/27055.jpg"
---

# Onii-chan Daisuki!

![Onii-chan Daisuki!](https://t.vndb.org/cv/55/27055.jpg)

**Alternative Title:** お兄ちゃん大好き！

**Aliases:** I Love You Big Brother

**Developer:** BABEL

**Release date:** Aug 17, 2008

**Platform:** Windows, MOB

**Language:** Japanese, Chinese (simplified)

**Rating:** 5.7/10 (13 votes)

## Description
It's summer vacation, and Kouji was asked by his uncle to take care of his house and daughter Mizuki while he's on a trip. All alone with his beloved cousin, Kouji was certain something good would happen... 

A small incident leads to a lovey-dovey life with Mizuki-chan.

## Characters
### Sugiyama Mizuki (椙山 瑞樹)
- **Gender:** Female
- **Hair:** Pink, Twin Tails, Long, Straight, Blunt Bangs
- **Body:** Slim, Pale, Kid, Flat Chest
- **Clothes:** Dress, T-shirt, Sport Bloomers, One Piece Swimsuit, Clothing with Ribbons, Ribbon Hair Tie, String Ribbon Tie
- **Role:** Cousin, Imouto Act
- **Eyes:** Garnet, Tareme
- **Voiced by:** Tsugaru Ringo

## Shops
- [Official Website](http://www.babel-soft.com/babel11.html)
- [DLsite](https://www.dlsite.com/maniax/work/=/product_id/RJ043090.html)

## Releases
### Japanese
- **2008-08-17**: Onii-chan Daisuki! - Package Edition - [Official website](http://www.babel-soft.com/babel11.html), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=12053)
- **2008-10-01**: Onii-chan Daisuki! - Download Edition - [Official website](http://www.babel-soft.com/babel11.html), [DLsite](https://www.dlsite.com/maniax/work/=/product_id/RJ043090.html), [Gyutto](https://gyutto.com/i/item12804), [Digiket](https://www.digiket.com/work/show/_data/ID=ITM0024701/), [DL.Getchu](http://dl.getchu.com/i/item4430), [DMM](https://www.dmm.co.jp/dc/doujin/-/detail/=/cid=d_019315/)
- **2010-01-25**: Onii-chan Daisuki! - [Official website](http://moe.eaa.jp/babel/onityandaisuki/index.html)

### Chinese (simplified)
- **2015-07-24**: Zui Xihuan Gege le! - [Official website](http://tieba.baidu.com/p/3916252327)

## Tags
ADV, Imouto-type Heroine, Linear Plot, Only a Single Heroine, Defloration, Only Virgin Heroines, Heroine with Swimsuits, Missionary Position, Heroine with Sport Bloomers, Intercrural Sex, Doggy Style, Only Loli Heroines, Sitting Sex, Only Younger Heroines, Vaginal Masturbation, Vaginal Fingering, Straight Lolicon, Only Protagonist's Relatives as Heroine(s), Sex Involving Children, Twin Tail Heroine, Single Blowjob, Single Handjob, Cousin Incest, Protagonist's Cousin as a Heroine

## More Games from BABEL
- [True Heart Story](https://pinovel.net/v27619)
- [Yodare](https://pinovel.net/v27618)
- [Kanyan](https://pinovel.net/v31030)
- [Kapon](https://pinovel.net/v65461)
- [A Nya](https://pinovel.net/v27630)
- [Black & White](https://pinovel.net/v10429)
- [Sukumizu Masshigura☆](https://pinovel.net/v10430)
- [Onii-chan Daisuki!](https://pinovel.net/v10431)
- [Tsundere na Imouto](https://pinovel.net/v10432)
- [Iinchou no Iinari Kyoushi](https://pinovel.net/v10433)
- [Kamoku na Imouto](https://pinovel.net/v3849)
- [Chippai Imouto](https://pinovel.net/v10434)
- [Burakon!](https://pinovel.net/v6505)
- [Onii-chan Mou Icchatta no?](https://pinovel.net/v8490)
- [Imouto no Hitori Ecchi](https://pinovel.net/v10435)
- [Toilet de Itazura](https://pinovel.net/v11077)
- [Imouto to Hokentaiiku](https://pinovel.net/v11900)
- [Lo no Yu](https://pinovel.net/v15926)
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- [Onii-chan Ecchi Shiyo?](https://pinovel.net/v16157)
- [Shoujo Enkou](https://pinovel.net/v16926)
- [Koakuma Katekyo](https://pinovel.net/v17960)
- [Muma Shoujo Sylvie](https://pinovel.net/v18582)
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- [Inaka de Katekyo](https://pinovel.net/v31117)
- [Offline de Ecchi na Level Age](https://pinovel.net/v33113)
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- [Inaka de Kawaii Oyome-san to](https://pinovel.net/v55049)
- [Meikko ga Ninshin Suru Made](https://pinovel.net/v59146)
- [Imouto no Tomodachi to Himitsu no Kankei](https://pinovel.net/v63981)
- [Imouto ga Ore no Koto Sukisugiru](https://pinovel.net/v65863)

---
*View the full details at [pinovel.net/v10431](https://pinovel.net/v10431).*

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```