---
title: "Nee~ Onii-chaa~n ~Imouto-tachi no Dokkidoki Yuuwaku Kassen!~"
description: "Naoki has two younger sisters, Yura and Riru. One day, Yura suddenly makes sexual approaches to him! Riru aggressively approaches him as well! A battle for Naok"
image: "https://t.vndb.org/cv/58/2158.jpg"
---

# Nee~ Onii-chaa~n ~Imouto-tachi no Dokkidoki Yuuwaku Kassen!~

![Nee~ Onii-chaa~n ~Imouto-tachi no Dokkidoki Yuuwaku Kassen!~](https://t.vndb.org/cv/58/2158.jpg)

**Alternative Title:** ねぇ～お兄ちゃぁ～ん ～妹たちのドッキドキ誘惑合戦！～

**Developer:** Swan

**Release date:** May 29, 2009

**Platform:** Windows

**Language:** Japanese

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

## Description
Naoki has two younger sisters, Yura and Riru. One day, Yura suddenly makes sexual approaches to him! Riru aggressively approaches him as well! A battle for Naoki breaks out like this! Well, which girl will he choose...?

[From ErogeShop]

## Characters
### Matsuyama Naoki (松山 直樹)
- **Gender:** Male
- **Hair:** Black, Short
- **Body:** Teen, Pale
- **Role:** High School Student, Older Brother

### Matsuyama Riru (松山 里瑠)
- **Gender:** Female
- **Hair:** Red, Shoulder-length
- **Body:** Teen, Pale
- **Clothes:** School Uniform, Mini-dress, Pajamas, Kemonomimi Headband, Sport Bloomers, Maid's Dress, Nurse Uniform, Garter Belt Stockings, Ribbon Hair Tie, Maid's Headdress, Nurse's Cap, Over The Knee Socks, Cheerleading Uniform
- **Eyes:** Violet
- **Role:** Full Sister, High School Student, Younger Sister
- **Subject of:** Pregnancy
- **Engages in:** Cosplay
- **Personality:** Brother Complex, Puffy

### Matsuyama Yura (松山 夕空)
- **Gender:** Female
- **Hair:** Bun, Waist Length+, Straight, Blunt Bangs, Orange
- **Body:** Teen, Pale
- **Clothes:** School Uniform, Mini-dress, Kemonomimi Headband, Evening Gloves, Maid's Dress, Gothic, Wedding Dress, Nurse Uniform, Garter Belt Stockings, Veil, Ribbon Hair Accessory, Maid's Headdress, Nurse's Cap, New Type School Swimsuit, Over The Knee Socks
- **Engages in:** Cooking, Cosplay, Wedding
- **Role:** Non-blood-related Sister, High School Student, Younger Sister
- **Subject of:** Pregnancy
- **Eyes:** Pink
- **Personality:** Brother Complex

## Shops
- [Official Website](http://www.swaneye.com/swan/neonii/index.html)
- [DLsite](https://www.dlsite.com/pro/work/=/product_id/VJ003704.html)
- [Getchu](http://www.getchu.com/soft.phtml?id=637185)

## Releases
### Japanese
- **2009-05-29**: Nee~ Onii-chaa~n ~Imouto-tachi no Dokkidoki Yuuwaku Kassen!~ Package Edition - [Official website](http://www.swaneye.com/swan/neonii/index.html), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=12477), [Getchu](http://www.getchu.com/soft.phtml?id=637185)
- **2009-05-29**: Nee~ Onii-chaa~n ~Imouto-tachi no Dokkidoki Yuuwaku Kassen!~ Download Edition - [Official website](http://www.swaneye.com/swan/neonii/index.html), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=12477), [DLsite](https://www.dlsite.com/pro/work/=/product_id/VJ003704.html), [Gyutto](https://gyutto.com/i/item17191), [Digiket](https://www.digiket.com/work/show/_data/ID=ITM0031045/), [DL.Getchu](http://dl.getchu.com/i/item1001648), [DMM](https://dlsoft.dmm.co.jp/detail/hobc_0166/)

## Tags
Blood-related Brother/Sister Incest, Non-blood-related Brother/Sister Incest, Male Protagonist, Nukige, Protagonist's Non-blood-related Sister as a Heroine, High Sexual Content, Group Sex of One Male and Several Females, Pregnancy, Floating Textbox, Heroine with Zettai Ryouiki, Unlockable Harem Ending, Defloration, Only Virgin Heroines, Sixty-nine, Impregnation, Brocon Heroine, Doggy Style, Outdoor Sex, Only Protagonist's Sisters as Heroine(s), High School Student Heroine, Sex with Protagonist Only, Sitting Sex, Anal Sex, Vaginal Fingering, Quickie Fix Position, Adult Breast Sucking, Sex at School, Bondage, Single Blowjob, Protagonist's Full Sister as a Heroine, Protagonist's Younger Sister as a Heroine, Only Younger Heroines, Sexual Cosplay, Heroine with Sport Bloomers, Female Ejaculation, Cheerleader Heroine, Inbreeding, Maid Cosplay, High School Student Protagonist, Heroine with Swimsuits, Cowgirl, Heroine with Small Breasts (Non-Loli), Discreet Sex, Heroine with Big Breasts, Vaginal Masturbation, Bathroom Sex, Single Boobjob

## More Games from Swan
- [Shimai Ecchi ~Ore ga Kyoushi de Ani de Tanin de~](https://pinovel.net/v10328)
- [Ore no Kanojo wa Loli de Kyonyuu de Akiba Kei](https://pinovel.net/v10087)
- [Yuuwaku Ren'ai ~Jitsu wa Kyonyuu de Muchimuchi de~](https://pinovel.net/v1236)
- [Nee Ane Paradise ~Ore to Nee-chan no Amaama Seikatsu~](https://pinovel.net/v6380)
- [Oppai Nurse! ~Hakui no Sakunyuu Byoutou~](https://pinovel.net/v10226)
- [Lovelove Choukyou Futago Shimai](https://pinovel.net/v1233)
- [Oppai Teacher ~Muchimuchi Seikyouiku~](https://pinovel.net/v6298)
- [Be, Betsu ni Anta no Tame ni Oshiete Agerun Ja Nain Dakara ne!](https://pinovel.net/v1956)
- [Nee~ Onii-chaa~n ~Imouto-tachi no Dokkidoki Yuuwaku Kassen!~](https://pinovel.net/v1768)
- [Cool na Ano Ko no H na Mousou](https://pinovel.net/v2210)
- [Hokenshitsu no Misaki Sensei](https://pinovel.net/v2610)
- [Momoiro Choukyou ~Mezase H na Ojou-sama~](https://pinovel.net/v2877)
- [Hara ☆ Para!! ~Swan Nakadashi Paradise~](https://pinovel.net/v7060)
- [Mezase Ero Mangaka ~Watashi Shojo Desu kedo!?~](https://pinovel.net/v7753)
- [Shojo Sotsugyou! ~Watashi de Doutei Sutemasen ka?~](https://pinovel.net/v9904)

---
*View the full details at [pinovel.net/v1768](https://pinovel.net/v1768).*

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```