---
title: "Seitenkan ~Ore no Naka de Ikeba Ii Daro!?~"
description: "Akira lived from day to day without any change. Every day he protected his little sister from their alcoholic father. School was a drag. It was a boys-only prep"
image: "https://t.vndb.org/cv/69/16469.jpg"
---

# Seitenkan ~Ore no Naka de Ikeba Ii Daro!?~

![Seitenkan ~Ore no Naka de Ikeba Ii Daro!?~](https://t.vndb.org/cv/69/16469.jpg)

**Alternative Title:** 性転換～オレの膣内でいけばいいだろ!？～

**Aliases:** Seitenkan (The Sex Change) -You Can Cum Inside Me!-

**Developer:** Dieselmine

**Release date:** Nov 23, 2012

**Platform:** Windows

**Language:** English, Spanish, Japanese

**Rating:** 5.5/10 (310 votes)

## Description
Akira lived from day to day without any change. Every day he protected his little sister from their alcoholic father. School was a drag. It was a boys-only prep school.  "I hate this life!" he thought. One traffic accident later, and he awoke as a female. (!?) 

There was no way "she" could protect her sister like this... unless she played to her old man's perverted nature. "Well hello cutie, you want to take her place?" Akira's father offered predictably. To spare her cute imouto, Akira spread her new feminine legs. In spirit still a boy... and with his own father... it was like a nightmare. But physically, another feeling took over... 

Teacher and student, father and son/daugther sexual experiences. Akira lives day to day with huge change. 

[From [DLsite English](http://www.dlsite.com/ecchi-eng/work/=/product_id/RE105818.html)]

## Characters
### Tooyama Akira (遠山 アキラ)
- **Gender:** Female
- **Hair:** Violet, Red, Twin Tails, Shoulder-length, Straight, Multicolored, V Bangs
- **Body:** Teen, Slim, Pale, Big Breasts
- **Role:** Student, Full Sister, Older Sister, Sexual Submissive
- **Clothes:** Mask, Hair Ribbon, Evening Gloves, Skirt, Thigh-high Stockings, Collar, Tank Top, Bikini, One Piece Swimsuit, Bondage Harness, Hair Tie, Ribbon Hair Tie, Baby-doll, Transparent, Sarashi, Over The Knee Socks, Sailor School Uniform, Latex Thigh-high Stockings, Gakuran
- **Subject of:** Pregnancy, Sex Change (Male to Female)
- **Personality:** Protective
- **Eyes:** Teal
- **Engages in:** Lactation
- **Voiced by:** Ayana Maria

### Tooyama Akira (遠山 アキラ)
- **Gender:** Male
- **Hair:** Violet, Red, Short, Multicolored, V Bangs
- **Body:** Teen, Slim, Pale
- **Role:** Student, Full Brother, Older Brother, Sexual Submissive
- **Personality:** Protective
- **Eyes:** Teal
- **Clothes:** Gakuran
- **Subject of:** Sex Change (Male to Female)

### Kaneshiro (金城)
- **Gender:** Male
- **Hair:** Brown, Short, Spiky
- **Eyes:** Brown
- **Body:** Muscular, Dark
- **Clothes:** T-shirt, Jumpsuit, Swimsuit
- **Items:** Whistle
- **Engages in:** Sexual Harassment
- **Role:** PE Teacher

### Kanjirou (勘次郎)
- **Gender:** Male
- **Clothes:** Trousers, Scarf, Belt, Tank Top
- **Body:** Overweight, Ugly
- **Engages in:** Domestic Violence, Drinking, Alcohol Abuse, Sexual Harassment
- **Role:** Father
- **Personality:** Arrogant, Short-tempered
- **Hair:** Grey, Balding

### Mariko (麻里子)
- **Gender:** Female
- **Hair:** Long, Curtained, Teal, Spiky Bangs, Parted in Middle, Pubic Hair
- **Eyes:** Brown
- **Body:** Pale, Young-adult, Big Breasts
- **Clothes:** Glasses, Miniskirt, Lab Coat, Tank Top, Bondage Harness, Crotchless Panties, Eye Mask, Fishnet Thigh-high Stockings, Crotchless Fishnet Bodystocking
- **Role:** Medical Doctor, Homosexual
- **Personality:** Altruistic
- **Voiced by:** Shino

### Takefumi (貴文)
- **Gender:** Male
- **Hair:** Violet, Short, Blunt Bangs
- **Clothes:** School Uniform, Glasses
- **Eyes:** Violet
- **Role:** Friend, Bisexual

### Tooyama Anzu (遠山 杏)
- **Gender:** Both
- **Hair:** Pink, Twin Tails, Shoulder-length, Straight, Blunt Bangs
- **Body:** Slim, Pale, Kid, Futanari, Small Breasts
- **Clothes:** School Uniform, Thigh-high Stockings, Collar, Blindfold, Bondage Harness, Ribbon Hair Tie, Latex, Baby-doll, Transparent, Sailor School Uniform, Eye Mask, Open Cup Baby-doll, Latex Thigh-high Stockings
- **Eyes:** Blue, Violet, Tareme, Central Heterochromia
- **Subject of:** Pregnancy
- **Personality:** Naive, Atashi
- **Role:** Bisexual, Younger Sister, Sexual Submissive
- **Engages in:** Lactation
- **Voiced by:** Bubaigawara Shiho

## Shops
- [Official Website](http://dieselmine.com/2012/seitenkan/index.html)
- [DLsite](https://www.dlsite.com/maniax/work/=/product_id/RJ105818.html)
- [Getchu](http://www.getchu.com/soft.phtml?id=761253)

## Releases
### Japanese
- **2012-11-23**: Seitenkan ~Ore no Naka de Ikeba Ii Daro!?~ Download Edition - [Official website](http://dieselmine.com/2012/seitenkan/index.html), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=17903), [DLsite](https://www.dlsite.com/maniax/work/=/product_id/RJ105818.html), [Gyutto](https://gyutto.com/i/item95176), [Digiket](https://www.digiket.com/work/show/_data/ID=ITM0074537/), [DL.Getchu](http://dl.getchu.com/i/item34272), [DMM](https://www.dmm.co.jp/dc/doujin/-/detail/=/cid=d_053378/)
- **2012-12-28**: Seitenkan ~Ore no Naka de Ikeba Ii Daro!?~ Package Edition - [Official website](http://dieselmine.com/2012/seitenkan/index.html), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=17903), [Getchu](http://www.getchu.com/soft.phtml?id=761253)

### English
- **2014-05-17**: Seitenkan (The Sex Change) ~You can cum inside me!?~ - [Official website](http://lv1translator.wordpress.com/2014/05/17/seitenkan-the-sex-changeyou-can-cum-inside-me-release/)

### Spanish
- **2022-08-01**: Seitenkan (The Sex Change) ~You can cum inside me!?~ - [Official website](https://pandemicteam.wixsite.com/alter/post/seitenkan-en-español)

## Tags
ADV, Lesbian Sex, Rape, Blood-related Sister/Sister Incest, Male Protagonist, Female Protagonist, Multiple Endings, Loli Heroine, Nukige, Sexual Slavery, Bondage, Protagonist's Blood-related Sister as a Heroine, High Sexual Content, Group Sex of One Female and Several Males, Sex Change, Prostitution, Blood-related Father/Daughter Incest, Sex Involving Prostitution, Pregnancy, Pregnant Sex, Futanari Heroine, Student Protagonist, Prostitute Heroine, Group Sex of Multiple Females and Males, Prostitute Protagonist, Unavoidable Protagonist Rape, Dildos, Defloration, Sex in Public Places, Alcoholism, Twin Tail Heroine, Missionary Position, Sixty-nine, Sounds of Copulation, Heroine with Bodystocking, Impregnation, Lactation During Sex, Multiple Penetration, Bukkake, Anilingus, Erotic Spanking, Balls Sucking, Unlockable Choices, Genderbent Sex, Group Sex of Several Females, Doggy Style, Naked Sprites, Deepthroat, Anal Toys, Excessive Semen, Cowgirl, Sex in Water, Promiscuity, Standing Sex, Ahegao, Bathroom Sex, Sexual Slavery (Choukyou Variation), Erotic Electrostimulation, Voiced Thoughts, Reverse Missionary, Blowbang, Boobs on Glass, Double Dildos, Blowjob Duck Face, Heroine with Pubic Hair, Cock and Ball Torture Devices, Cock and Ball Torture, Double Handjob, Twin Handjob, Double Penetration (Group Sex), Futanari on Female, Heroine with Latex, Mouth Gag, Rope Bondage, Anal Gaping, Single Boobjob, Single Handjob, Single Blowjob, Vaginal Masturbation, Pissing, Anal Sex, Vaginal Gaping, Protagonist's Full Sister as a Heroine, Protagonist's Younger Sister as a Heroine, Heroine with Big Breasts, Flat Tints Only, Slave Auction, Oyaji Hero, P.E. Teacher Hero

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---
*View the full details at [pinovel.net/v11687](https://pinovel.net/v11687).*

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```