---
title: "Kaa-san no Otoko ~Yajuu no You na Otoko ni Mesu no Yorokobi o Oboesaserareru Saiai no Haha~"
description: "The protagonist, Shin'ichi Kosaka, has a secret that he cannot tell anyone. It is that he is in a sexual relationship with his mother, Mizuho.  While ostensibly"
image: "https://t.vndb.org/cv/01/139801.jpg"
---

# Kaa-san no Otoko ~Yajuu no You na Otoko ni Mesu no Yorokobi o Oboesaserareru Saiai no Haha~

![Kaa-san no Otoko ~Yajuu no You na Otoko ni Mesu no Yorokobi o Oboesaserareru Saiai no Haha~](https://t.vndb.org/cv/01/139801.jpg)

**Alternative Title:** 母さんのオトコ ～野獣のような男に牝の悦びを覚えさせられる最愛の母～

**Developer:** Eroit

**Release date:** Feb 27, 2015

**Platform:** Windows, DVD

**Language:** Japanese, English

**Rating:** 6.8/10 (123 votes)

## Description
The protagonist, Shin'ichi Kosaka, has a secret that he cannot tell anyone.
It is that he is in a sexual relationship with his mother, Mizuho.

While ostensibly acting as a son and as a husband behind closed doors, the two love each other and have been carrying on a forbidden relationship.
Their happy life together, which seemed like it would last forever, is suddenly destroyed by a man.

The man's name is Onisawa Shigehiko.
He was a violent man who had long been attracted to Mizuho's good looks and often visited the mother and child. Onisawa discovers the mother and son's secret and demands physical relations with Mizuho in exchange for not revealing their secret.
In order to protect her life with her beloved son, Mizuho ends up giving herself to Onisawa.

Eventually, her ripe body becomes accostumed to Onisawa's hands and she becomes a prisoner of pleasure.......

## Characters
### Kousaka Shin'ichi (高坂 慎一)
- **Gender:** Male
- **Hair:** Black, Short
- **Role:** Son
- **Subject of:** Netori (their SO is stolen)

### Kousaka Mizuho (高坂 瑞穂)
- **Gender:** Female
- **Measurements:** Height: 157cm, Bust-Waist-Hips: 103-66-97cm, H cup
- **Hair:** Black, Ponytail, Long, Straight, Parted to Side, Pubic Hair, Braided Crown
- **Body:** Pale, Adult, Mole, Big Breasts
- **Clothes:** Sweater, Trousers, Kimono, Cardigan, Miniskirt, Belt, Garter Belt Stockings, Naked Apron, Open Cup Bra, Thong Panties, Open Cup Baby-doll, Slave Collar
- **Engages in:** Cooking, Infidelity, Lactation
- **Eyes:** Amber
- **Subject of:** Blackmail, Pregnancy, Sexual Corruption, Pregnancy (by illegitimate partner), Netorare (they are the stolen SO)
- **Role:** Widow, Mother, Conductor
- **Personality:** Kind, Son Complex
- **Voiced by:** Yuu Haruka

### Onisawa Shigehiko (鬼沢 重彦)
- **Gender:** Male
- **Hair:** Blond, Short, Spiky
- **Eyes:** Blue
- **Body:** Muscular, Olive
- **Clothes:** Suit, Watch
- **Engages in:** Blackmail, Netori (steals the SO)

## Shops
- [Official Website](http://eroit.net/kaasannootoko/index.html)
- [DLsite](https://www.dlsite.com/pro/work/=/product_id/VJ009134.html)
- [Getchu](http://www.getchu.com/soft.phtml?id=1360933)

## Releases
### Japanese
- **2015-02-20**: Kaa-san no Otoko ~Yajuu no You na Otoko ni Mesu no Yorokobi o Oboesaserareru Saiai no Haha~ Trial Edition - [Official website](http://eroit.net/kaasannootoko/index.html#trial)
- **2015-02-27**: Kaa-san no Otoko ~Yajuu no You na Otoko ni Mesu no Yorokobi o Oboesaserareru Saiai no Haha~ Package Edition - [Official website](http://eroit.net/kaasannootoko/index.html), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=21447), [Getchu](http://www.getchu.com/soft.phtml?id=840911)
- **2015-02-27**: Kaa-san no Otoko ~Yajuu no You na Otoko ni Mesu no Yorokobi o Oboesaserareru Saiai no Haha~ Download Edition - [Official website](http://eroit.net/kaasannootoko/index.html), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=21447), [DLsite](https://www.dlsite.com/pro/work/=/product_id/VJ009134.html), [Gyutto](https://gyutto.com/i/item137473), [Digiket](https://www.digiket.com/work/show/_data/ID=ITM0112768/), [DL.Getchu](http://dl.getchu.com/i/item1005115), [DMM](https://dlsoft.dmm.co.jp/detail/ggs_0954/)
- **2015-09-10**: Kaa-san no Otoko ~Yajuu no You na Otoko ni Mesu no Yorokobi o Oboesaserareru Saiai no Haha~ DVDPG - [Official website](http://www.n43project.com/n43/npg208/outline.html), [Getchu](http://www.getchu.com/soft.phtml?id=864333), [DMM](https://www.dmm.co.jp/mono/anime/-/detail/=/cid=h_107npg208/)
- **2026-04-19**: Kaa-san no Otoko ~Yajuu no You na Otoko ni Mesu no Yorokobi o Oboesaserareru Saiai no Haha~ Low Price Edition DVDPG - [Getchu](http://www.getchu.com/soft.phtml?id=1360933), [DMM](https://www.dmm.co.jp/mono/anime/-/detail/=/cid=h_107mnpg270/)

### English
- **2024-03-27**: Kaa-san no Otoko ~Yajuu no You na Otoko ni Mesu no Yorokobi o Oboesaserareru Saiai no Haha~ - [Official website](https://greatvisualnovel.up.railway.app/vns/16720)

## Tags
ADV, Male Protagonist, Multiple Endings, Nukige, Only a Single Heroine, Group Sex of One Female and Several Males, Early Sexual Content, Pregnancy, Pregnant Sex, Adult Heroine, Netorare, Blood-related Mother/Son Incest, Big Breast Sizes Heroine, Widow Heroine, Other Perspectives, Protagonist's Blood-related Mother as a Heroine, Rape with Blackmail, Vibrators, Hidden Vibrator, Condoms, Remote-controlled Vibrator, Anal Penetration, Boobjob, Sixty-nine, Blowjob, Impregnation, Lactation During Sex, Bukkake, Only Bad Endings, Naked Heroine with Apron, Cunnilingus, Corruption of Characters, Doggy Style, Female Ejaculation, Netorare Type B, Anal Toys, Cowgirl, Standing Sex, Sitting Sex, Spoons, Discreet Sex, Ahegao, Sex in Front of an Audience, Heroine with Children, Sexual Blindfold, Gang Bang, Quickie Fix Position, Discreet Phone Sex, Only Adult Heroines, Heroine with Pubic Hair, Double Handjob, Only Older Heroines, Spreader Bar, Adult Breast Sucking, Heroine with Crotchless Clothing, Sex on Toilet, Hair Pulling (Sexual), Used Condoms Exposition, Anal Sex, Only Protagonist's Relatives as Heroine(s), No "Keep Voice on Click" Option

## 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)
- [Onna Ninja Azusa vs Orc 2 ~Injuu-tachi no Utage~](https://pinovel.net/v23059)
- [Musume no Mirai ~Itoshii Musume ga Kairaku ni Ochiru Toki~](https://pinovel.net/v24856)
- [Onna Ninja Azusa vs Orc 3 ~Injuu-tachi no Oukoku~](https://pinovel.net/v25554)
- [Tomodachi no Haha ~Jukujuku Taru Omoi~](https://pinovel.net/v28015)
- [Kaa-san no Otoko 2 ~Saiai no Haha ni Muragaru Osu~](https://pinovel.net/v28402)
- [Aisai ~Tsuma to Oyaji Dake no Toki~](https://pinovel.net/v30974)
- [Hitozuma Heaven ~Takuran Ureta Shikyuu ni Kodane o Sosogu~](https://pinovel.net/v31770)
- [Boku no Inai Jikan ni Maotoko-tachi ni Tanetsukesareru Haha](https://pinovel.net/v38518)
- [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/v16720](https://pinovel.net/v16720).*

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