---
title: "Toumei Ningen - Iregui Chuuzou"
description: "The protagonist, Hirumada Chuuzou, a chemistry teacher at the private Narumizawa Academy, has been secretly researching a drug that turn people invisible. Howev"
image: "https://t.vndb.org/cv/71/32871.jpg"
---

# Toumei Ningen - Iregui Chuuzou

![Toumei Ningen - Iregui Chuuzou](https://t.vndb.org/cv/71/32871.jpg)

**Alternative Title:** 透明人間 挿れ喰い仲三

**Developer:** Mink EGO

**Release date:** Sep 29, 2017

**Platform:** Windows

**Language:** Japanese

**Rating:** 6.0/10 (25 votes)

## Description
The protagonist, Hirumada Chuuzou, a chemistry teacher at the private Narumizawa Academy, has been secretly researching a drug that turn people invisible. However, he is fired after it is discovered that he is using school equipment for his personal research, and his previous sexual harassment behavior has also become an issue. When Hirumada came to pack up his belongings, he drank the newly completed drug, becoming invisible and taking up residence at the school. Taking advantage of the fact that he was invisible, he engaged in lewd acts as revenge against the girls who have made fun of him and the school, and to satisfy his own desires.

[From [Getchu](https://www.getchu.com/soft.phtml?id=964121&gc=gc)]

## Characters
### Hirumada Chuuzou (蛭間蛇 仲三)
- **Gender:** Male
- **Measurements:** Height: 159cm, Weight: 62kg
- **Hair:** Black
- **Eyes:** Black
- **Clothes:** Glasses, Lab Coat
- **Personality:** Selfish
- **Role:** Teacher, Unemployed, Unpopular
- **Body:** Ugly

### Aihara Suzune (相原 鈴音)
- **Gender:** Female
- **Measurements:** Height: 158cm, Weight: 48kg, Bust-Waist-Hips: 86-56-84cm
- **Hair:** Ponytail, Waist Length+, Grey
- **Eyes:** Red
- **Role:** Class President, High School Student, Younger Sister
- **Engages in:** Tennis
- **Body:** Big Breast Sizes
- **Personality:** Brother Complex
- **Clothes:** Ribbon Hair Tie
- **Voiced by:** Inemuri Suyako

### Hiyama Kyouko (樋山 響子)
- **Gender:** Female
- **Measurements:** Height: 167cm, Weight: 51kg, Bust-Waist-Hips: 90-60-89cm
- **Hair:** Black, Waist Length+, Straight
- **Eyes:** Amber
- **Role:** Teacher
- **Body:** Big Breast Sizes
- **Voiced by:** Nonomura Saya

### Houzuki Sanae (法月 沙苗)
- **Gender:** Female
- **Measurements:** Height: 165cm, Weight: 49kg, Bust-Waist-Hips: 84-57-86cm
- **Hair:** Black, Long, Straight
- **Eyes:** Violet
- **Clothes:** Glasses
- **Role:** High School Student
- **Body:** Big Breast Sizes
- **Voiced by:** Yoshinaka Ai

### Satou Ayaka (佐藤 彩香)
- **Gender:** Female
- **Measurements:** Height: 160cm, Weight: 47kg, Bust-Waist-Hips: 85-56-86cm
- **Hair:** Brown, Short, Straight, Parted to Side
- **Clothes:** School Uniform, Ribbon Tie
- **Eyes:** Blue, Tareme
- **Role:** High School Student
- **Body:** Big Breasts
- **Voiced by:** Asai Komomo

### Aihara Touma (相原 斗真)
- **Gender:** Male
- **Measurements:** Height: 178cm, Weight: 63kg
- **Hair:** Short, Green
- **Eyes:** Green
- **Clothes:** Glasses, Necktie, Lab Coat
- **Role:** Teacher, Older Brother
- **Personality:** Sister Complex

## Shops
- [Official Website](http://www.mink.co.jp/ego/tomei/)
- [DLsite](https://www.dlsite.com/pro/work/=/product_id/VJ011313.html)
- [Getchu](http://www.getchu.com/soft.phtml?id=964121)

## Releases
### Japanese
- **2017-08-25**: Toumei Ningen - Iregui Chuuzou - Trial Edition - [Official website](http://www.mink.co.jp/ego/tomei/download/index.html)
- **2017-09-29**: Toumei Ningen - Iregui Chuuzou - Package Edition - [Official website](http://www.mink.co.jp/ego/tomei/), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=25509), [Getchu](http://www.getchu.com/soft.phtml?id=964121), [DMM](https://www.dmm.co.jp/mono/pcgame/-/detail/=/cid=1776apc11923/)
- **2017-11-02**: Toumei Ningen - Iregui Chuuzou - Download Edition - [Official website](http://www.mink.co.jp/ego/tomei/), [DLsite](https://www.dlsite.com/pro/work/=/product_id/VJ011313.html), [Gyutto](https://gyutto.com/i/item199088), [Digiket](https://www.digiket.com/work/show/_data/ID=ITM0167117/), [DL.Getchu](http://dl.getchu.com/i/item4005840), [DMM](https://dlsoft.dmm.co.jp/detail/views_0566/)

## Tags
ADV, Male Protagonist, Multiple Endings, Teacher Heroine, Group Sex of One Female and Several Males, Revenge, Teacher Protagonist, Bad Ending(s), Death of Protagonist, Ugly Protagonist, Brocon Heroine, Central Heroine, Music Recollection, Invisibility, Heroine Having Sex with Others, High School Student Heroine, Single Blowjob, Sitting Sex, Anal Sex, Cowgirl, Blood-related Brother/Sister Incest, Class President Heroine, Heroine with Big Breasts, Single Handjob, Defloration, Doggy Style, Ponytail Heroine, Chubby Protagonist, Missionary Position, Quickie Fix Position, Double Penetration (Group Sex), Protagonist with Glasses, Single Boobjob, Heroine with Glasses

## More Games from Mink EGO
- [Onii-chan ni wa Zettai Ienai Taisetsu na Koto.](https://pinovel.net/v11559)
- [Imouto Dakara Dekiru Koto, Imouto Janai to Dame na Koto.](https://pinovel.net/v12432)
- [Boku no Itoshii Imouto ga Netorarechatta Wake](https://pinovel.net/v15276)
- [Mahou Shoujo no Ani ~Heta na Uso to Furyou Shounen~](https://pinovel.net/v16721)
- [Toumei Ningen - Iregui Chuuzou](https://pinovel.net/v21428)
- [Imouto ~Mitsutsubo: Dai Nishou~](https://pinovel.net/v21921)

---
*View the full details at [pinovel.net/v21428](https://pinovel.net/v21428).*

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