---
title: "Souseiji"
description: "I saw my sister changing her clothes, and learned of the female body. My sister saw me masturbating, and learned of the opposite sex. Before long, we sought eac"
image: "https://t.vndb.org/cv/96/139896.jpg"
---

# Souseiji

![Souseiji](https://t.vndb.org/cv/96/139896.jpg)

**Alternative Title:** 双性児

**Aliases:** Twins

**Developer:** Vincent

**Release date:** Dec 25, 2007

**Platform:** Windows

**Language:** Japanese

**Rating:** 5.3/10 (avg, 3 votes)

## Description
I saw my sister changing her clothes, and learned of the female body.
My sister saw me masturbating, and learned of the opposite sex.
Before long, we sought each other out.
And before we knew what was going on, we had became one.

[From [DLsite English](http://www.dlsite.com/ecchi-eng/work/=/product_id/RE036260.html)]

## Characters
### Kasuya Haruki (粕谷 春樹)
- **Gender:** Male
- **Role:** Twin Brother, Student Club Member, High School Student, Older Brother

### Kasuya Haruna (粕谷 春奈)
- **Gender:** Female
- **Role:** Twin Sister, High School Student, Younger Sister
- **Voiced by:** Bubaigawara Shiho

## Shops
- [DLsite](https://www.dlsite.com/maniax/work/=/product_id/RJ036260.html)

## Releases
### Japanese
- **2007-12-25**: Souseiji - [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=11124), [DLsite](https://www.dlsite.com/maniax/work/=/product_id/RJ036260.html), [DMM](https://www.dmm.co.jp/dc/doujin/-/detail/=/cid=d_017201)

## Tags
Sexual Content, Male Protagonist, Only Protagonist's Sisters as Heroine(s), Only Younger Heroines, High School Student Heroine, Flat Tints Only, Only Blood-related Heroines, Blood-related Brother/Sister Incest, Twincest, High Sexual Content, Nukige, Single Blowjob

## More Games from Vincent
- [Souseiji](https://pinovel.net/v23158)
- [Youshou Seishi Love Phenomena](https://pinovel.net/v56489)
- [Geishun Hanafuda Enbu](https://pinovel.net/v66680)
- [Akihabara ZR-4](https://pinovel.net/v67043)
- [Class no Fushigi-chan o Niku Benki ni Shite Mitta!](https://pinovel.net/v40983)
- [Seidou no Alice](https://pinovel.net/v27355)
- [Megane de Kyonyuu na Kanojo](https://pinovel.net/v27668)
- [Hotel Approa](https://pinovel.net/v56487)
- [Tokoya-san My NTR Wife](https://pinovel.net/v67041)
- [Chiisana Inma Ganbaru](https://pinovel.net/v67449)

---
*View the full details at [pinovel.net/v23158](https://pinovel.net/v23158).*

```json
{"@context":"https://schema.org","@type":"VideoGame","@id":"https://pinovel.net/v23158#game","name":"Souseiji","description":"I saw my sister changing her clothes, and learned of the female body. My sister saw me masturbating, and learned of the opposite sex. Before long, we sought eac","url":"https://pinovel.net/v23158","image":"https://t.vndb.org/cv/96/139896.jpg","author":{"@type":"Organization","name":"Vincent"},"aggregateRating":{"@type":"AggregateRating","ratingValue":"5.3","bestRating":10,"worstRating":1,"ratingCount":3}}
```