---
title: "Imouto no Seiiki"
description: "This is the second title in feng’s low-price Seiiki series, focusing on younger sister Yukana Nase.  When Youhei was small, he used to visit Akiba often. Even t"
image: "https://t.vndb.org/cv/72/71472.jpg"
---

# Imouto no Seiiki

![Imouto no Seiiki](https://t.vndb.org/cv/72/71472.jpg)

**Alternative Title:** 妹のセイイキ

**Developer:** feng

**Release date:** Aug 28, 2015

**Platform:** Windows

**Language:** English, Japanese, Chinese (simplified), Korean

**Rating:** 6.5/10 (475 votes)

## Description
This is the second title in feng’s low-price Seiiki series, focusing on younger sister Yukana Nase.

When Youhei was small, he used to visit Akiba often. Even though it was for his younger sister Yukana, he soon got hooked on game centres and that’s how he became friends with his ojou-sama classmate Fuyuka. One day, Fuyuka gifted Yukana with a Christmas trip and the siblings enjoyed their time alone together like a couple. Looking at his younger sister, he realized that still hasn’t saved her from that time.

“You won’t let your younger sister take your virginity even though you’re into Akiba stuff… I hate you, onii-chan!”

[From [Hau~ Omochikaeri!](https://omochikaeri.wordpress.com/2015/07/12/july-2015-eroge-releases/)]

## Characters
### Nase Youhei (名瀬 陽平)
- **Gender:** Male
- **Hair:** Black, Short
- **Body:** Teen, Slim, Pale
- **Eyes:** Hazel
- **Role:** Full Brother, Childhood Friend, Tsukkomi, Middle Brother, Eleventh Grader, Twelfth Grader
- **Personality:** Kind

### Nase Yukana (名瀬 ゆかな)
Yohei's younger sister. She is a third year middle school student who looks forward to attending high school with her brother next year.

Desperately in love with her brother, Yohei, despite being embarrassed by it. Her love for her brother causes her to act sweet to him sometimes while her embarrassment causes her to become angry at him at other times.

- **Gender:** Female
- **Measurements:** Height: 161cm, F cup
- **Hair:** Brown, Bun, Twin Tails, Waist Length+, Intake, V Bangs, Sidehair
- **Body:** Teen, Slim, Pale, Big Breasts
- **Personality:** Hard Worker, Modern Tsundere, Pervert, Friendly, Smart, Brother Complex, Atashi
- **Engages in:** Cooking, Flirting, Swimming, Graduation
- **Eyes:** Hazel
- **Clothes:** Kimono, Pajamas, Miniskirt, Knee-high Socks, Thigh-high Stockings, Bikini, Hairpin, Hair Flower, Naked Apron, Body Ribbon, Clothing with Ribbons, Ribbon Hair Tie, Off-The-Shoulder Shirt, Sailor School Uniform, Loafers, Naked Ribbon, Ribbon Hair Wrap
- **Subject of:** Nymphomania, Psychological Trauma, Phobia
- **Role:** Full Sister, Domestic Partner, Younger Sister, Secret Girlfriend, Ninth Grader, Tenth Grader
- **Items:** Mobile Phone
- **Voiced by:** Akino Hana

### Akiyoshi Fuyuka (秋善 冬華)
- **Gender:** Female
- **Measurements:** Height: 158cm, D cup
- **Hair:** Black, Waist Length+, Straight, Spiky Bangs
- **Body:** Teen, Slim, Pale
- **Eyes:** Black
- **Clothes:** Earrings, Necklace, Evening Gloves, Pantyhose, Maid's Dress, Belt, Collar, Beret, Miko's Dress, Corset, Fishnet Stockings, School Swimsuit, Maid's Headdress, Old Type School Swimsuit, Torn Pantyhose (damaged), Knee-high Boots, High Heeled Boots, Pet Collar, Blazer School Uniform
- **Personality:** Modern Tsundere, Pretending, Naive, Watashi
- **Role:** Girlfriend, Childhood Friend, Waitstaff, Poor, High School Student, Part-time Worker, Sex Friend
- **Engages in:** Teasing
- **Subject of:** Teasing
- **Voiced by:** Haruka Sora

### Nase Yaeka (名瀬 やえか)
Protagonist's older sister and his homeroom teacher.

- **Gender:** Female
- **Measurements:** Height: 167cm
- **Hair:** Brown, Bun, Waist Length+, Sidehair
- **Body:** Slim, Young-adult, Big Breasts
- **Eyes:** Hazel
- **Clothes:** Gym Shorts, Garter Belt Stockings, Blouse, Skirt Suit
- **Personality:** Lazy, Serious, Brother Complex
- **Engages in:** Drinking
- **Role:** Full Sister, Older Sister, Homeroom Teacher
- **Voiced by:** Kaga Hikaru

### Ootori Maika (鳳 マイカ)
Youhei's classmate who's a half-Japanese.

- **Gender:** Female
- **Measurements:** Height: 145cm
- **Hair:** White, Wavy, Short, V Bangs, Spiky Bangs
- **Body:** Slim, Pale, Kid, Younger Appearance, Small Breasts, Short
- **Engages in:** Cooking, Shopping
- **Eyes:** Blue, Teal, Jitome, Multicolored Eyes
- **Personality:** Otaku, Stoic, Food Lover, Stylish, Watashi
- **Role:** Daughter, Classmate, Wealthy, High School Student, Russian, Transfer Student, Half-Japanese
- **Clothes:** Hoodie, One Piece Swimsuit, Hairpin, Ribbon Tie, Ribbon Hair Accessory, Choker, Over The Knee Socks, Sailor School Uniform, Loafers, Kemonomimi Hood
- **Voiced by:** Kanau

## Shops
- [Official Website](http://www.feng.jp/seiiki/imouto/)
- [Steam](https://store.steampowered.com/app/1977740/)
- [Getchu](http://www.getchu.com/soft.phtml?id=847727)

## Releases
### Japanese
- **2015-08-28**: Imouto no Seiiki - Regular Edition - [Official website](http://www.feng.jp/seiiki/imouto/), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=21641), [Melonbooks.co.jp](https://www.melonbooks.co.jp/detail/detail.php?product_id=128382), [Getchu](http://www.getchu.com/soft.phtml?id=847726)
- **2015-08-28**: Imouto no Seiiki - Dakimakura Cover Included Deluxe Limited Edition - [Official website](http://www.feng.jp/seiiki/imouto/), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=21641), [Getchu](http://www.getchu.com/soft.phtml?id=847727), [Toranoana](https://ec.toranoana.shop/tora/ec/item/210006558997/)
- **2015-08-28**: Imouto no Seiiki - Download Edition - [Official website](http://www.feng.jp/seiiki/imouto/), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=21641), [DMM](https://dlsoft.dmm.co.jp/detail/feng_0004/)
- **2023-06-26**: Imouto no Seiiki - [Denpasoft](https://denpasoft.com/product/my-little-sisters-special-place/)
- **2023-06-26**: Imouto no Seiiki - Censored Edition - [Official website](https://sekaiproject.com/game/imouto-no-seiiki/), [Steam](https://store.steampowered.com/app/1977740/), [SteamDB](https://steamdb.info/app/1977740/info/)
- **2023-06-26**: Imouto no Seiiki - 18+ DLC - [Denpasoft](https://denpasoft.com/product/my-little-sisters-special-place-18-dlc/)

### Chinese (simplified)
- **2015-10-25**: Mei de Shengyu - [Official website](http://bbs.seikuu.com/thread-143029-1-1.html)
- **2015-12-17**: Meimei de Shengyu - [Official website](http://tieba.baidu.com/p/4217985456)
- **2023-06-26**: Imouto no Seiiki - [Denpasoft](https://denpasoft.com/product/my-little-sisters-special-place/)
- **2023-06-26**: Imouto no Seiiki - Censored Edition - [Official website](https://sekaiproject.com/game/imouto-no-seiiki/), [Steam](https://store.steampowered.com/app/1977740/), [SteamDB](https://steamdb.info/app/1977740/info/)
- **2023-06-26**: Imouto no Seiiki - 18+ DLC - [Denpasoft](https://denpasoft.com/product/my-little-sisters-special-place-18-dlc/)

### Korean
- **2021-10-09**: Imouto no Seiiki - [Official website](https://arca.live/b/yuzusoft/35759228)

### English
- **2023-06-26**: Imouto no Seiiki - [Denpasoft](https://denpasoft.com/product/my-little-sisters-special-place/)
- **2023-06-26**: Imouto no Seiiki - Censored Edition - [Official website](https://sekaiproject.com/game/imouto-no-seiiki/), [Steam](https://store.steampowered.com/app/1977740/), [SteamDB](https://steamdb.info/app/1977740/info/)
- **2023-06-26**: Imouto no Seiiki - 18+ DLC - [Denpasoft](https://denpasoft.com/product/my-little-sisters-special-place-18-dlc/)
- **2025-07-29**: My Little Sister's Special Place - Mosaic Restoration Patch - [Official website](https://files.catbox.moe/8aau10.rar)

## Tags
ADV, Blood-related Brother/Sister Incest, Male Protagonist, Late Branching Plot, Modern Tsundere Heroine, Defloration, Only Virgin Heroines, Super Deformed CGs, Heroine with Intake Hairstyle, Anilingus, Brocon Heroine, Female Ejaculation, Outdoor Sex, Few Choices, Deepthroat, Cowgirl, Sex in Water, Only Protagonist's Sisters as Heroine(s), Standing Sex, Sitting Sex, Spoons, Quickie Fix Position, Perverted Heroine, Anal Fingering, Only Younger Heroines, Protagonist's Childhood Friend as a Support Character, Protagonist's Full Sister as a Heroine, Sex with Protagonist Only, Protagonist's Younger Sister as a Heroine, Heroine with Big Breasts, Only a Single Heroine, Only Blood-related Heroines, Protagonist's Sister as a Support Character

## More Games from feng
- [Knot ~Kizuna no Mahou~](https://pinovel.net/v2915)
- [White Princess](https://pinovel.net/v3039)
- [Magical Girls Twin☆kle](https://pinovel.net/v3040)
- [Aozora no Mieru Oka](https://pinovel.net/v1073)
- [Akaneiro ni Somaru Saka](https://pinovel.net/v547)
- [Hoshizora e Kakaru Hashi](https://pinovel.net/v2968)
- [Hoshizora e Kakaru Hashi AA](https://pinovel.net/v8309)
- [Chiisana Kanojo no Serenade](https://pinovel.net/v11072)
- [Kanojo no Seiiki](https://pinovel.net/v16150)
- [Imouto no Seiiki](https://pinovel.net/v16845)
- [Gakkou no Seiiki](https://pinovel.net/v19302)
- [Zutto Mae Kara Joshi Deshita](https://pinovel.net/v21395)
- [Yume to Iro de Dekiteiru](https://pinovel.net/v16516)

---
*View the full details at [pinovel.net/v16845](https://pinovel.net/v16845).*

```json
{"@context":"https://schema.org","@type":"VideoGame","@id":"https://pinovel.net/v16845#game","name":"Imouto no Seiiki","description":"This is the second title in feng’s low-price Seiiki series, focusing on younger sister Yukana Nase.  When Youhei was small, he used to visit Akiba often. Even t","url":"https://pinovel.net/v16845","image":"https://t.vndb.org/cv/72/71472.jpg","author":{"@type":"Organization","name":"feng"},"aggregateRating":{"@type":"AggregateRating","ratingValue":"6.5","bestRating":10,"worstRating":1,"ratingCount":475}}
```