---
title: "Seishun☆Dynamite!! ~Ikenai Houkago~"
description: "The protagonist Miyao Yo is kind of all over the place. But one day, he is asked out by a girl. Since that moment, his life dramatically changes.  90% of CG pic"
image: "https://t.vndb.org/cv/61/141961.jpg"
---

# Seishun☆Dynamite!! ~Ikenai Houkago~

![Seishun☆Dynamite!! ~Ikenai Houkago~](https://t.vndb.org/cv/61/141961.jpg)

**Alternative Title:** 性春☆ダイナマイトっ!! ～イケない放課後～

**Aliases:** Seishun Dynamite -dangerous after school-

**Developer:** Softhouse-Seal

**Release date:** Mar 23, 2007

**Platform:** Windows

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

**Rating:** 5.4/10 (18 votes)

## Description
The protagonist Miyao Yo is kind of all over the place. But one day, he is asked out by a girl. Since that moment, his life dramatically changes.

90% of CG pictures are hentai! Multiple endings are featured.
Which girl do you choose to be your girlfriend???

[from [DLsite English](http://www.dlsite.com/ecchi-eng/work/=/product_id/RE029999.html)]

## Characters
### Miyao You (宮尾 葉)
- **Gender:** Male
- **Hair:** Brown, Short
- **Role:** Student, Step Brother

### Asaka Nachi (朝霞 那智)
- **Gender:** Female
- **Measurements:** Height: 158cm, Bust-Waist-Hips: 87-54-87cm, D cup
- **Hair:** Pink, Waist Length+, Straight
- **Clothes:** School Uniform, Kimono, Thigh-high Stockings, Collar, Beret, Clothing with Ribbons, Unusual Hair Ornaments
- **Eyes:** Violet
- **Role:** Idol, Yamato Nadeshiko, Popular, Ojousama
- **Personality:** Refined, Keigo
- **Subject of:** Being Drugged
- **Voiced by:** Midorikawa Yuuna

### Igarashi Tooya (五十嵐 遠夜)
- **Gender:** Female
- **Measurements:** Height: 153cm, Bust-Waist-Hips: 90-54-82cm, E cup
- **Hair:** Blue, Twin Tails, Long, Curtained, Parted in Middle
- **Clothes:** School Uniform, Sweater, Skirt, Thigh-high Stockings, Clothing with Ribbons, Hair Tie
- **Eyes:** Red
- **Personality:** Stoic
- **Engages in:** Drug Abuse
- **Role:** Senpai, School Science Club Member
- **Voiced by:** Shimotsuki Yuu

### Miyao Natsume (宮尾 なつめ)
- **Gender:** Female
- **Measurements:** Height: 154cm, Bust-Waist-Hips: 86-54-84cm, C cup
- **Hair:** Pink, Ponytail, Long, Spiky Bangs, Sidehair
- **Clothes:** School Uniform, Shirt, T-shirt, Shorts, Thigh-high Stockings, Belt, Panties, Clothing with Ribbons, Hair Tie, Shimapan
- **Eyes:** Green
- **Personality:** Carefree, Brother Complex
- **Role:** Step Sister, Cheerleader, Not a Virgin, Younger Sister
- **Voiced by:** Suzuki Nanako

### Tsukishiro Kosuzu (月城 小鈴)
- **Gender:** Female
- **Measurements:** Height: 160cm, Bust-Waist-Hips: 89-58-90cm, D cup
- **Hair:** Brown, Twin Tails, Waist Length+
- **Clothes:** School Uniform, Thigh-high Stockings, Maid's Dress, Bow Tie, Clothing with Ribbons, Ribbon Hair Tie, Maid's Headdress
- **Eyes:** Blue
- **Personality:** Tsundere, Energetic, Atashi
- **Role:** Childhood Friend, Classmate, Not a Virgin, Actor, Ex-girlfriend
- **Engages in:** Lactation
- **Voiced by:** Kisaka Rio

## Shops
- [Official Website](http://softhouse-seal.com/003-seisyun.html)
- [DLsite](https://www.dlsite.com/maniax/work/=/product_id/RJ029999.html)
- [Getchu](http://www.getchu.com/soft.phtml?id=1010942)

## Releases
### Japanese
- **2007-03-23**: Seishun☆Dynamite!! ~Ikenai Houkago~ Package Edition - [Official website](https://web.archive.org/web/20160424120759/http://softhouse-seal.com/003-seisyun.html), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=8930)
- **2007-03-23**: Seishun☆Dynamite!! ~Ikenai Houkago~ Download Edition - [Official website](http://softhouse-seal.com/003-seisyun.html), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=8930), [DLsite](https://www.dlsite.com/maniax/work/=/product_id/RJ029999.html), [Gyutto](https://gyutto.com/i/item5584), [Gyutto](https://gyutto.com/i/item4107), [Digiket](https://www.digiket.com/work/show/_data/ID=ITM0009563/), [DL.Getchu](http://dl.getchu.com/i/item1301), [DMM](https://www.dmm.co.jp/dc/doujin/-/detail/=/cid=d_013380/), [DMM](https://dlsoft.dmm.co.jp/detail/high_0033/)
- **2008-04-25**: Shirukan Ippatsume - [Official website](https://web.archive.org/web/20230323165417/https://softhouse-seal.com/product/ex001_shirukan/shirukan_ippatsume.html), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=27015), [Getchu](http://www.getchu.com/soft.phtml?id=526705), [DL.Getchu](http://dl.getchu.com/i/item3401)
- **2008-05-30**: Seal Best collection - [Official website](http://softhouse-seal.com/product/ex002_3pack/index.html), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=16007), [Getchu](http://www.getchu.com/soft.phtml?id=529865)
- **2013-12-06**: softhouse-seal Pack Vol.1 - [Official website](http://softhouse-seal.softstore.jp/i/item115644), [Gyutto](https://gyutto.com/i/item115644)
- **2015-12-25**: softhouse-seal Nukige 100-pon Ultimate Pack - Deluxe Edition - [Official website](http://softhouse-seal.com/product/100pon-set/index.html), [Getchu](http://www.getchu.com/soft.phtml?id=876808), [DMM](https://www.dmm.co.jp/mono/pcgame/-/detail/=/cid=1471sea139/)
- **2015-12-25**: softhouse-seal Doon! to 100-pon Set - [DMM](https://dlsoft.dmm.co.jp/detail/high_0138pack/)
- **2015-12-25**: softhouse-seal Nukige 100-pon Ultimate Pack - Compact Edition - [Official website](http://softhouse-seal.com/product/100pon-set/index.html), [Getchu](http://www.getchu.com/soft.phtml?id=876807)
- **2018-07-27**: softhouse-seal Nukige 100-pon Ultimate Pack - Outlet Edition - [Official website](http://softhouse-seal.com/product/100pon-set/index.html), [Getchu](http://www.getchu.com/soft.phtml?id=1010942)

### Chinese (simplified)
- **2012-12-11**: Qingchun Zhayao!! ~Yindang de Fangxuehou~

## Tags
Sexual Content, ADV, Protagonist's Senpai as a Heroine, Male Protagonist, Multiple Endings, Ojousama Heroine, Protagonist's Childhood Friend as a Heroine, Protagonist's Non-blood-related Sister as a Heroine, Group Sex of One Female and Several Males, Student Heroine, Heroine with Zettai Ryouiki, Heroine with Sexual Experience, Netorare, Unavoidable Heroine Rape, Tsundere Heroine, Bad Ending(s), Brocon Heroine, Unlockable Hero(ine), Heroine Having Sex with Others

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---
*View the full details at [pinovel.net/v5112](https://pinovel.net/v5112).*

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