---
title: "Onna no Ko no Himitsu"
description: "Main character has a distinctive female face. He is invited to drink tea an adviser to science department, and meeting passes without any surprise. However, ove"
image: "https://t.vndb.org/cv/75/30775.jpg"
---

# Onna no Ko no Himitsu

![Onna no Ko no Himitsu](https://t.vndb.org/cv/75/30775.jpg)

**Alternative Title:** 女の子のヒミツ

**Developer:** Yamikumo-Communications

**Release date:** Feb 21, 2003

**Platform:** Windows, DVD

**Language:** Japanese

**Rating:** 6.6/10 (7 votes)

## Description
Main character has a distinctive female face. He is invited to drink tea an adviser to science department, and meeting passes without any surprise. However, overnight his body turns into a female body! It turns out that tea contained powerful drug, and antidote can be used only in a month's time. This month is going to be the time for peculiar explorations and unexpected meetings.

[From [vndbreview](https://vndbreview.blogspot.com/2019/05/vn-of-month-february-2003-routes.html)]

## Characters
### Hiramoto Masami (平本 柾美)
- **Gender:** Both
- **Hair:** Shoulder-length, Green, Multicolored, Pubic Hair
- **Clothes:** School Uniform, Thigh-high Stockings
- **Eyes:** Black
- **Role:** High School Student
- **Subject of:** Sex Change
- **Body:** Futanari
- **Voiced by:** Oohana Don

### Aizawa Kanoko (相澤 香乃子)
- **Gender:** Female
- **Hair:** Blond, Waist Length+, Wavy, Pubic Hair
- **Clothes:** School Uniform, Bikini, Naked Apron, Ribbon Hair Accessory, Strapless Swimsuit, Sailor School Uniform, Micro Bikini
- **Role:** Childhood Friend, High School Student
- **Eyes:** Garnet
- **Voiced by:** Tadokoro Yuri

### Ishida Akane (石田 茜)
- **Gender:** Female
- **Hair:** Red, Antenna, Ponytail, Waist Length+, Pubic Hair
- **Eyes:** Blue
- **Clothes:** Glasses, Skirt, Blouse, Ribbon Hair Tie
- **Role:** Teacher
- **Body:** Big Breast Sizes
- **Voiced by:** Misaki Yuuka

### Kamiya Momo (神谷 もも)
- **Gender:** Female
- **Hair:** Ahoge, Shoulder-length, Orange, Pubic Hair
- **Clothes:** School Uniform, Overall, Naked Apron, Sailor School Uniform
- **Eyes:** Blue
- **Role:** Kouhai, High School Student
- **Voiced by:** Izumi Ayano

### Daisy (デイジー)
- **Gender:** Female
- **Hair:** Violet, Shoulder-length
- **Eyes:** Green
- **Role:** Maid, Robot
- **Clothes:** Maid's Dress, Maid's Headdress
- **Voiced by:** Imai Kaoru

### Kuroki Kurumi (黒木 胡桃)
- **Gender:** Female
- **Hair:** Black, Ponytail, Waist Length+, Pubic Hair, Armpit Hair
- **Clothes:** Glasses, Cross Necklace, Skirt, Lab Coat, Blouse
- **Engages in:** Smoking
- **Role:** Teacher, Student Club Advisor
- **Eyes:** Pink
- **Items:** Cigarette
- **Subject of:** Penis Growth
- **Voiced by:** Sakura Kyouko

## Shops
- [Official Website](http://www.cd-bros.co.jp/yamitsu/game/onnanoko/)
- [DLsite](https://www.dlsite.com/pro/work/=/product_id/VJ001365.html)
- [Getchu](http://www.getchu.com/soft.phtml?id=21288)

## Releases
### Japanese
- **2003-02-21**: Onna no Ko no Himitsu - Limited Edition - [Official website](http://www.cd-bros.co.jp/yamitsu/game/onnanoko/), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=2579), [DLsite](https://www.dlsite.com/pro/work/=/product_id/VJ001365.html)
- **2003-02-21**: Onna no Ko no Himitsu - Regular Edition - [Official website](http://www.cd-bros.co.jp/yamitsu/game/onnanoko/), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=2579), [Getchu](http://www.getchu.com/soft.phtml?id=21288)
- **2004-09-09**: Onna no Ko no Himitsu DVDPG Kaikan Torikaekko - [Official website](http://www.cd-bros.co.jp/yamitsu/game/onnanoko_pg/index.html), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=3997)
- **2009-02-27**: Onna no Ko no Himitsu - Download Edition - [Official website](http://www.cd-bros.co.jp/yamitsu/game/onnanoko/)

## Tags
Teacher Heroine, Ojousama Heroine, Sex Change, Gender Bending, Vibrators, Strap-on Dildos, Anal Penetration, Footjob, Boobjob, Missionary Position, Blowjob, Handjob, Twin Blowjob, Bukkake, Futanari Protagonist, Cunnilingus, Genderbent Sex, Doggy Style, Outdoor Sex, Fingering, Feet Licking, Cowgirl, Frot, Sitting Sex, Spoons, Clamps (BDSM), Twin Boobjob, Sexual Blindfold, Reverse Missionary, Quickie Fix Position, Specula (Sexual), Double Dildos, Heroine with Pubic Hair, Heroine with Armpit Hair, Double Handjob, Anal Fingering, Gaping, Double Penetration (Group Sex), Group Sex with Clones, Heroine with Crotchless Clothing, Gynecologist Chair, Rope Bondage, High School Student Heroine

## More Games from Yamikumo-Communications
- [Shiishii Syndrome](https://pinovel.net/v1630)
- [Onna no Ko no Himitsu](https://pinovel.net/v1631)
- [Sefure☆Syndrome](https://pinovel.net/v1632)
- [Minna de Nyan Nyan](https://pinovel.net/v1)
- [Moteasobing ~Moteasobaretai~](https://pinovel.net/v1679)

---
*View the full details at [pinovel.net/v1631](https://pinovel.net/v1631).*

```json
{"@context":"https://schema.org","@type":"VideoGame","@id":"https://pinovel.net/v1631#game","name":"Onna no Ko no Himitsu","description":"Main character has a distinctive female face. He is invited to drink tea an adviser to science department, and meeting passes without any surprise. However, ove","url":"https://pinovel.net/v1631","image":"https://t.vndb.org/cv/75/30775.jpg","author":{"@type":"Organization","name":"Yamikumo-Communications"},"aggregateRating":{"@type":"AggregateRating","ratingValue":"6.6","bestRating":10,"worstRating":1,"ratingCount":7}}
```