---
title: "Gangan Namauchi! Onii-chan, Boku, xx Shichau!!"
description: "The protagonist, Toshio Maekawa, is an unconventional third grader student who is in science major anywhere, and it is a virgin kun. Such he was to work as a tu"
image: "https://t.vndb.org/cv/82/9182.jpg"
---

# Gangan Namauchi! Onii-chan, Boku, xx Shichau!!

![Gangan Namauchi! Onii-chan, Boku, xx Shichau!!](https://t.vndb.org/cv/82/9182.jpg)

**Alternative Title:** ガンガン生射ち！お兄ちゃん、ボク、××しちゃうっ!!

**Aliases:** アクメツインパック DVDPG

**Developer:** Acme X

**Release date:** May 9, 2003

**Platform:** Windows, DVD

**Language:** Japanese

**Rating:** 5.0/10 (avg, 2 votes)

## Description
The protagonist, Toshio Maekawa, is an unconventional third grader student who is in science major anywhere, and it is a virgin kun.
Such he was to work as a tutor during the summer vacation.

The other party to teach is the curious girl "Mami" who goes to a famous private school,
Somehow live in the neighborhood of Shun man's house, a cheerful girl called Sanae who calls him an older brother.
The place to teach is a resort apartment in midsummer owned by the father of "Mami". Besides, it is a study camp in the night.
At first, Toshio also seriously taught them to study,
If a man and a woman live under the same roof, it will be decided naturally.
The innocent girls at first were played with mere curiosity, but the act of the Shun was gradually escalated.

"I will do my best to beat you! ! "

Toshio who is attached to madness tries all sorts of sex and will do the best of fornication ....

## Characters
### Maekawa Toshio (前川 俊男)
- **Gender:** Male
- **Role:** Tutor

### Morikawa Sanae (森河 早苗)
- **Gender:** Female
- **Hair:** Blond, Twin Tails, Shoulder-length
- **Clothes:** School Uniform, Rubber Band With Beads, Old Type School Swimsuit
- **Eyes:** Green
- **Body:** Small Breast Sizes
- **Voiced by:** Mizuki Sanae

### Shiratori Mami (白鳥 真美)
- **Gender:** Female
- **Hair:** Pink, Waist Length+
- **Clothes:** School Uniform, Thigh-high Stockings, New Type School Swimsuit
- **Eyes:** Teal
- **Role:** Ojousama
- **Voiced by:** Hirata Yukino

## Shops
- [Official Website](https://web.archive.org/web/20060706022021/http://www.acme-soft.net/main1.htm)
- [DLsite](https://www.dlsite.com/pro/work/=/product_id/VJ004537.html)
- [Getchu](http://www.getchu.com/soft.phtml?id=214741)

## Releases
### Japanese
- **2003-05-09**: Gangan Namauchi! Onii-chan, Boku, xx Shichau!! - [Official website](https://web.archive.org/web/20060706000106/http://www.acme-soft.net/gantop.htm), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=2737), [Getchu](http://www.getchu.com/soft.phtml?id=24791)
- **2005-09-29**: Acme 2 in Pack -Gangan Namauchi & Hageshiku Botebara- DVDPG - [Official website](https://web.archive.org/web/20090307110506/http://dvdpg.jp/DCPG094/dcpg094.htm)
- **2006-01-27**: Gangan Namauchi 2 - [Official website](https://web.archive.org/web/20060706022021/http://www.acme-soft.net/main1.htm), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=7057), [Getchu](http://www.getchu.com/soft.phtml?id=214741)
- **2010-04-09**: Gangan Namauchi! Onii-chan, Boku, xx Shichau!! - Download Edition - [DLsite](https://www.dlsite.com/pro/work/=/product_id/VJ004537.html), [Gyutto](https://gyutto.com/i/item5133), [Digiket](https://www.digiket.com/work/show/_data/ID=ITM0039719/), [DMM](https://dlsoft.dmm.co.jp/detail/views_0192/)

## Tags
ADV, Rape, Male Protagonist, Group Sex of One Female and Several Males, Defloration, Only Virgin Heroines, Only Loli Heroines, Straight Lolicon

## More Games from Acme X
- [Gangan Namauchi! Onii-chan, Boku, xx Shichau!!](https://pinovel.net/v7269)
- [Hageshiku Botebara! Senpai, Watashi no Ko, Mitomete Kudasai!!](https://pinovel.net/v14515)
- [Project Sex Shuudan Ninshin ~Athlete o Haramasero!~](https://pinovel.net/v10266)
- [Gangan Namauchi 2](https://pinovel.net/v9817)

---
*View the full details at [pinovel.net/v7269](https://pinovel.net/v7269).*

```json
{"@context":"https://schema.org","@type":"VideoGame","@id":"https://pinovel.net/v7269#game","name":"Gangan Namauchi! Onii-chan, Boku, xx Shichau!!","description":"The protagonist, Toshio Maekawa, is an unconventional third grader student who is in science major anywhere, and it is a virgin kun. Such he was to work as a tu","url":"https://pinovel.net/v7269","image":"https://t.vndb.org/cv/82/9182.jpg","author":{"@type":"Organization","name":"Acme X"},"aggregateRating":{"@type":"AggregateRating","ratingValue":"5.0","bestRating":10,"worstRating":1,"ratingCount":2}}
```