---
title: "Bokan ~Kaa-san no Naka wa Dare no Mono?~"
description: "The protagonist, Ueshima Haruto, was living alone with his stepmother Ruriko in an apartment. Despite being his stepmother, Haruto has developed romantic feelin"
image: "https://t.vndb.org/cv/78/33778.jpg"
---

# Bokan ~Kaa-san no Naka wa Dare no Mono?~

![Bokan ~Kaa-san no Naka wa Dare no Mono?~](https://t.vndb.org/cv/78/33778.jpg)

**Alternative Title:** 母感 ～義母さんの子宮は誰のモノ？～

**Aliases:** 母感（ぼかん） ～義母さんの子宮（なか）は誰のモノ？～

**Developer:** Eroit

**Release date:** Dec 22, 2017

**Platform:** Windows, DVD

**Language:** Japanese

**Rating:** 6.5/10 (74 votes)

## Description
The protagonist, Ueshima Haruto, was living alone with his stepmother Ruriko in an apartment. Despite being his stepmother, Haruto has developed romantic feelings for Ruriko, who is kind, domestic, and beautiful. One day, he witnesses her masturbating while thinking about her deceased husband. Unable to resist, Haruto also masturbates on the spot. When he was about to be found, he hurriedly fled the scene, but Ruriko understood the situation from the smell of the semen that remained on the spot.
She is troubled after learning that her adopted son is aware of her as a member of the opposite sex. To her doorstep comes her father-in-law, Gouzou, who has been waiting for an opportunity to embrace her. Gouzou skillfully draws out Ruriko's worries and makes her a proposal. The proposal is for Ruriko to find another man in order to give up her feelings for Haruto. Gozo pushes the bewildered Ruriko onto the sofa and forcibly engages in a physical relationship with her. Ruriko desperately resists, but is brought to climax many times by Gouzou's skillful technique, and finally ends up creampied. After Gouzouu left, Ruriko cried tears of sadness for being betrayed by her trusted stepfather and guilt towards her husband. However, deep inside that body covered in semen, the pleasure of a woman that had long been forgotten remained as a hot throb that continued to linger...

## Characters
### Ueshima Haruto (上島 晴人)
- **Gender:** Male
- **Role:** Grandson, Neighbor, High School Student, Non-blood-related Son, Half-orphan
- **Personality:** Mother Complex

### Ueshima Ruriko (上島 瑠璃子)
- **Gender:** Female
- **Measurements:** Height: 161cm, Weight: 58kg, Bust-Waist-Hips: 102-60-91cm, I cup
- **Hair:** Black, Long, Wavy, V Bangs, Spiky Bangs, Sidehair
- **Eyes:** Violet
- **Body:** Young-adult, Mole, Huge Breasts
- **Role:** Widow, Neighbor, Non-blood-related Mother, Part-time Worker
- **Personality:** Relaxed, Kind, Naive
- **Subject of:** Netorare (they are the stolen SO)
- **Voiced by:** Kotobuki Tsukasa

### Miyagawa Subaru (宮川 昴)
- **Gender:** Male
- **Hair:** Black, Short, Straight, Spiky Bangs
- **Eyes:** Amber
- **Body:** Kid
- **Clothes:** T-shirt, Shorts, Knee-high Socks
- **Personality:** Honest, Jealous

### Tagami Masahiko (田上 雅彦)
- **Gender:** Male
- **Hair:** Brown, Short, Straight, Parted to Side, Slicked Back
- **Eyes:** Brown
- **Clothes:** Suit, Necktie, Pocket Square
- **Personality:** Pretending, Refined, Womanizer
- **Body:** Large Penis
- **Role:** Office Worker

### Ueshima Gouzou (上島 剛三)
Age: Over 70.

- **Gender:** Male
- **Hair:** Short, Straight, Grey, No Bangs, Slicked Back
- **Clothes:** Trousers, Belt, Aloha Shirt
- **Eyes:** Black, Hosome
- **Body:** Adult, Wrinkles
- **Role:** Widower, Grandfather, Neighbor
- **Engages in:** Netori (steals the SO)

## Shops
- [Official Website](http://www.boot.eroit.net/bokan/index.html)
- [Getchu](http://www.getchu.com/soft.phtml?id=995186)

## Releases
### Japanese
- **2017-12-15**: Bokan ~Kaa-san no Naka wa Dare no Mono?~ Trial Edition - [Official website](http://www.boot.eroit.net/bokan/index.html#trial)
- **2017-12-22**: Bokan ~Kaasan no Naka wa Dare no Mono?~ Package Edition - [Official website](http://www.boot.eroit.net/bokan/index.html), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=25972)
- **2017-12-22**: Bokan ~Kaasan no Naka wa Dare no Mono?~ Download Edition - [Official website](http://www.boot.eroit.net/bokan/index.html), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=25972), [DMM](https://dlsoft.dmm.co.jp/detail/btup_0002/)
- **2018-04-26**: Bokan ~Kaa-san no Naka wa Dare no Mono?~ DVDPG - [Official website](http://www.n43project.com/n43/mnpg92/index.html), [Getchu](http://www.getchu.com/soft.phtml?id=995186), [DMM](https://www.dmm.co.jp/mono/anime/-/detail/=/cid=h_107mnpg92/)

## Tags
ADV, Rape, Male Protagonist, Multiple Endings, Nukige, Only a Single Heroine, Group Sex of One Female and Several Males, Early Sexual Content, Pregnant Sex, Netorare, Sex Involving Drugs, Student Protagonist, Widow Heroine, Other Perspectives, Protagonist's Non-blood-related Mother as a Heroine, Blackmail, Missionary Position, Sixty-nine, Internal Exhibition of Sex, Impregnation, Lactation During Sex, Bukkake, Only Bad Endings, Cunnilingus, Doggy Style, Non-blood-related Father/Daughter Incest, Outdoor Sex, Few Choices, Cowgirl, Standing Sex, Sitting Sex, Spoons, Ahegao, Love Hotel, Kissing Scene, Straight Shotacon, Discreet Phone Sex, Only Adult Heroines, Single Hole Double Penetration (obsolete), Only Older Heroines, Big Ass Heroine, Heroine Having Sex with Others, Only Non-Virgin Heroines, Heroine with Huge Breasts, Only Protagonist's Relatives as Heroine(s)

## More Games from Eroit
- [Nee-san no Kareshi ~Akogare no Nee-san ga Shin'yuu to Tsukiai Hajimemashita~](https://pinovel.net/v12819)
- [Ikenai Kozukuri ~Shin'yuu no Okaa-san ni Tanetsuke Shimakuru Isshuukan~](https://pinovel.net/v14547)
- [Oyako Ai ~Ikenai Kozukuri 2~](https://pinovel.net/v15287)
- [Kaa-san no Otoko ~Yajuu no You na Otoko ni Mesu no Yorokobi o Oboesaserareru Saiai no Haha~](https://pinovel.net/v16720)
- [Oyako Ai 2](https://pinovel.net/v17429)
- [Ikenai Kozukuri 3 ~Musuko no Koibito ga Miryokuteki de Komattemasu~](https://pinovel.net/v18812)
- [Boku no Daisuki na Oba-san](https://pinovel.net/v19189)
- [Onna Ninja Azusa vs Orc ~Zecchou! Ishukan Battle!~](https://pinovel.net/v20365)
- [Ikenai Kozukuri 4 ~Namaiki na Aneki ga Jitsu wa Ore no Semen ga Daisuki Datta!?~](https://pinovel.net/v20908)
- [Bokan ~Kaa-san no Naka wa Dare no Mono?~](https://pinovel.net/v22066)
- [Ikenai Kozukuri 5 ~Tonari ni Koshitekita Hitozuma to Ikenai Sex~](https://pinovel.net/v22470)
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- [Hitozuma Heaven 2 ~Hanshoku Mansion, Hitozuma no Shikyuu o Kodane de Mitasu~](https://pinovel.net/v50141)
- [Torarenbo ~Natsu no Aru Hi, Kaa-san wa Boku no Shin'yuu no Kodomo o Migomotta~](https://pinovel.net/v52445)
- [Ikenai Kozukuri DX ~Kousai Aite no Hahaoya to Ikenai Kozukuri~](https://pinovel.net/v58249)
- [Tomodachi no Haha 2 ~Ren'ai Jouju no Kami Appli de Shin'yuu no Kaasan o Koibito ni~](https://pinovel.net/v64165)

---
*View the full details at [pinovel.net/v22066](https://pinovel.net/v22066).*

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