---
title: "Ore no Imouto wa Seijun Bitch ~Oya ni wa Himitsu no Hamehame Seikatsu~"
description: "\"Not again today...\"  The squeals of my younger sister, Ena, echo from the next room. Both our parents are at work, and Ena takes advantage of the situation by "
image: "https://t.vndb.org/cv/52/73752.jpg"
---

# Ore no Imouto wa Seijun Bitch ~Oya ni wa Himitsu no Hamehame Seikatsu~

![Ore no Imouto wa Seijun Bitch ~Oya ni wa Himitsu no Hamehame Seikatsu~](https://t.vndb.org/cv/52/73752.jpg)

**Alternative Title:** 俺の妹は清純ビッチ ～親には秘密のハメハメ性活～

**Developer:** Ammolite

**Release date:** Aug 31, 2018

**Platform:** Windows, Android, DVD

**Language:** Japanese

**Rating:** 6.6/10 (51 votes)

## Description
"Not again today..."

The squeals of my younger sister, Ena, echo from the next room.
Both our parents are at work, and Ena takes advantage of the situation by constantly bringing her boyfriend over and having sex with him in broad daylight.

Hearing this every day is enough to make my frustration reach its peak!
Today, I couldn't take it anymore, so I barged into her room.

Her boyfriend hastily retreated, perhaps not realizing that her family was at home.
Ena sent her boyfriend off without even trying to hide her naked body.

"Oh no, I haven't come yet... That's right♪"

Ena grinned.
"Since you interrupted, I'll have you fill in for me."
"Huh?!"
And before I could even process what she'd just said, I was pushed down...

"Wow, this is amazing. I've never seen anything like this♪ Oh, I don't have a condom... 
Hmm, well, I guess it'll be fine as long as you don't cum inside me.
Also, I was curious about raw sex♪ So, I'll use this, Big Bro♪"

[From [Getchu](https://www.getchu.com/soft.phtml?id=1007732)]

## Characters
### Hoshizuki Souma (星月 奏馬)
The older brother of [url=https://vndb.org/c74120]Ena[/url] and a virgin who get conscious of his little sister. He really hates when she brings men in her room because he can heard her moaning behind the thin wall who separates there rooms.

Even if he isn't a huge siscon, he often masturbates by fantasizing about Ena or while she is with a boy. He is envious of her success. He thinks that Ena is the complete opposite of the "ideal sister type" you can see in anime or manga even if he thinks she's cute.

He hates that his sister is a bitch, and they do not get along well because of that. He often calls her "bitch" in his mind.

[spoiler]He is completely inexperienced and often thinks he is a "bad range" partner for his sister compared to all of her former partners, although she tells him they have an "incredible compatibility".

Seems to have a huge Baby Complex because, to "win" his sister, he wants to fertilize her at all costs.[/spoiler]

- **Gender:** Male
- **Hair:** Black, Short, Straight
- **Body:** Teen, Slim, Olive
- **Clothes:** School Uniform, Pajamas, T-shirt, Jeans, Sports Uniform
- **Engages in:** Cooking, Revenge, Shopping, Netori (steals the SO)
- **Eyes:** Hidden
- **Personality:** Otaku, Ore, Lazy, Jealous, Flustered, Dishonest, Baby Complex
- **Role:** Son, Full Brother, Senpai, High School Student, Older Brother, Lonely, Secret Boyfriend
- **Subject of:** Seduction, Manipulation

### Hoshizuki Ena (星月 恵那)
Ena is [url=https://vndb.org/c76033]Souma[/url]'s younger sister, unlike him, she is very popular with the opposite sex and often brings men to her room. Her parents don't suspect her true nature and think she has a boyfriend but she makes them believe that "he is just a friend, nothing more". She already had, at least, 3 "boyfriends" (= sex friends).

She doesn't seem to care who can be her partner (before having sex with her brother). 

When her brother interrupted her, she decided to take revenge by raping him. She immediately found their compatibility "excellent", telling him immediately that it was the first time she felt so good. Since, she becomes aware of her brother as a member of the opposite sex and tries to seduce him sexually.

[spoiler]Later, she becomes aware of her deep feelings and finally start to seduce him seriously so that he can become her boyfriend and she no longer seeks to see other boys. But because Souma is very dishonest with his feelings, she decides to lie to her brother in order to make him explode of rage while going out with her [url=https://vndb.org/c76034]former Sex Friend[/url] on the day of the festival in order to force her brother to confess his true feelings.

She is very clever and knows her brother very well, she knows that only jealousy will make him say his true feelings and that to have more control over him, to let him fertilize her and to promise him a child.[/spoiler]

- **Gender:** Female
- **Alias:** Bitch/Bitchie
- **Measurements:** Height: 159cm, Bust-Waist-Hips: 94-58-94cm, G cup
- **Hair:** Black, Twin Tails, Long, Curtained, Blunt Bangs, Half Updo
- **Body:** Teen, Slim, Pale, Huge Breasts
- **Clothes:** School Uniform, Dress, Pajamas, T-shirt, Sport Bloomers, Yukata, Ribbon Hair Tie, Old Type School Swimsuit, Thong Panties
- **Engages in:** Cooking, Planning, Seduction, Breakup, Manipulation
- **Eyes:** Violet
- **Personality:** Pretending, Smart, Honest, Assertive, Watashi, Closet Pervert, Promiscuous, Baby Complex, Manipulative
- **Subject of:** Nymphomania, Netorare (they are the stolen SO)
- **Role:** Daughter, Full Sister, Girlfriend, Kouhai, High School Student, Not a Virgin, Popular, Younger Sister, Honor Student, Ex-girlfriend, Sex Friend, Secret Girlfriend
- **Voiced by:** Minami Saya

### Hoshizuki's Father (父親)
The father of [url=https://vndb.org/c76033]Souma[/url] and [url=https://vndb.org/c74120]Ena[/url]. He is very busy with his work and often comes back late in the evening, just like his [url=https://vndb.org/c76035]wife[/url]. 

They think that their daughter are a quiet and kind girl and do not suspect she is actually an easy girl.

- **Gender:** Male
- **Alias:** Papa
- **Hair:** Black, Short
- **Body:** Slim, Adult, Olive
- **Eyes:** Hidden
- **Clothes:** Shirt
- **Engages in:** Driving
- **Role:** Husband, Father, Not a Virgin, No Name, Office Worker

### Hoshizuki's Mother (母親)
The mother of [url=https://vndb.org/c76033]Souma[/url] and [url=https://vndb.org/c74120]Ena[/url]. She is very busy with her work and often comes back late in the evening, just like her [url=https://vndb.org/c76036]husband[/url]. 

They think that their daughter are a quiet and kind girl and do not suspect she is actually an easy girl.

- **Gender:** Female
- **Alias:** Mama
- **Hair:** Brown, Short
- **Body:** Slim, Pale, Adult, Big Breast Sizes
- **Engages in:** Cooking
- **Eyes:** Hidden
- **Clothes:** T-shirt, Skirt
- **Role:** Wife, Mother, Not a Virgin, No Name, Office Worker

### Kouji (コウジ)
A man with who [url=https://vndb.org/c74120]Ena[/url] had started the preliminaries at the beginning of the story. They were brutally interceded by [url=https://vndb.org/c76033]Souma[/url] and he fled because he didn't know she had a brother. 

[spoiler]Seems to be Ena's actual boyfriend (from his point of view) but Ena seems to see him more like a Sex Friend.[/spoiler]

- **Gender:** Male
- **Aliases:** Man/男, Kouji-kun
- **Body:** Teen, Olive
- **Clothes:** T-shirt, Jeans
- **Role:** Boyfriend, High School Student, Not a Virgin, Ex-boyfriend, Sex Friend
- **Subject of:** Disappointment, Netori (their SO is stolen), Breakup, Manipulation

## Shops
- [Official Website](http://www.ammolite-game.com/amml_019/top.html)
- [DLsite](https://www.dlsite.com/appx/work/=/product_id/VJ012058.html)
- [Getchu](http://www.getchu.com/soft.phtml?id=1023128)

## Releases
### Japanese
- **2018-08-31**: Ore no Imouto wa Seijun Bitch ~Oya ni wa Himitsu no Hamehame Seikatsu~ Package Edition - [Official website](http://www.ammolite-game.com/amml_019/top.html), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=26850), [Getchu](http://www.getchu.com/soft.phtml?id=1007732)
- **2018-08-31**: Ore no Imouto wa Seijun Bitch ~Oya ni wa Himitsu no Hamehame Seikatsu~ Download Edition - [Official website](http://www.ammolite-game.com/amml_019/top.html), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=26850), [DLsite](https://www.dlsite.com/pro/work/=/product_id/VJ011964.html), [DMM](https://dlsoft.dmm.co.jp/detail/aman_0225/)
- **2018-08-31**: Ore no Imouto wa Seijun Bitch ~Oya ni wa Himitsu no Hamehame Seikatsu~ Android Edition - [DLsite](https://www.dlsite.com/appx/work/=/product_id/VJ012058.html)
- **2018-11-30**: Ore no Imouto wa Seijun Bitch ~Oya ni wa Himitsu no Hamehame Seikatsu~ DVDPG - [Getchu](http://www.getchu.com/soft.phtml?id=1023128)

## Tags
ADV, Blood-related Brother/Sister Incest, Male Protagonist, Multiple Endings, Nukige, Only a Single Heroine, Nympho Heroine, Sex in Public Places, Wake-up Sex, Promiscuous Heroine, Inbreeding, Sex in a Vehicle, Outdoor Sex, Few Choices, Naked Sprites, Cowgirl, Only Protagonist's Sisters as Heroine(s), Standing Sex, Sitting Sex, Discreet Sex, Bathroom Sex, Sex in Front of an Audience, Mutual Masturbation, Soapy Massage, Reverse Missionary, Quickie Fix Position, Discreet Phone Sex, Only Younger Heroines, Heroine Having Sex with Others, Only Non-Virgin Heroines, Single Buttjob, High School Student Heroine, Heroine with Huge Breasts, Only Blood-related Heroines, Doggy Style, Heroine in Relationship with Other(s), Single Handjob, Vaginal Fingering, Single Blowjob, Protagonist's Full Sister as a Heroine, Single Footjob, Protagonist's Younger Sister as a Heroine, High School Student Protagonist, Single Boobjob, Vaginal Masturbation, Sexual Cosplay, Spoons, Attempted Rape, Voyeurism, Adult Breast Sucking, Butterfly, Cunnilingus, Netori, Sexual Fantasizing, Missionary Position, Heroine with Sport Bloomers, Masturbation in front of an Audience, Bukkake, Female Ejaculation, Heroine with Swimsuits, Perverted Heroine, Heroine with Baby Complex, Pretending Heroine

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---
*View the full details at [pinovel.net/v23187](https://pinovel.net/v23187).*

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