---
title: "Iinazuke wa Imouto-sama!"
description: "Shun lives alone with his sister Yuna after their father remarries. Yuna acts harshly to Shun and often yells at him for the slightest mistakes. Suddenly Haruka"
image: "https://t.vndb.org/cv/34/137034.jpg"
---

# Iinazuke wa Imouto-sama!

![Iinazuke wa Imouto-sama!](https://t.vndb.org/cv/34/137034.jpg)

**Alternative Title:** 許嫁は妹さま！

**Aliases:** 許嫁は妹様！

**Developer:** PeasSoft

**Release date:** Dec 22, 2011

**Platform:** Windows

**Language:** Japanese, English

**Rating:** 5.5/10 (307 votes)

## Description
Shun lives alone with his sister Yuna after their father remarries. Yuna acts harshly to Shun and often yells at him for the slightest mistakes. Suddenly Haruka arrives unannounced and claims to be Shun and Yuna's new sister. Since she's Shun's new sister she believes that must mean they love each other and if they love each other that must mean they're engaged to be married and if they're engaged to be married that must mean they should do ecchi things together.

Yuna fights back for her brother and announces that she won't give Shun up to Haruka or anyone! Haruka then concludes that Yuna must love Shun too and if she loves Shun too that must mean they're engaged to be married as well and if they're engaged to be married as well that must mean they should all do ecchi things together!

## Characters
### Usami Shun (宇佐美 駿)
At the start Shun lives alone with his sister Yuuna. He's a second year highschool student and the envy of most boys in his class who have a crush on his sister.

- **Gender:** Male
- **Body:** Teen
- **Role:** Betrothed, Full Brother, Step Brother, High School Student

### Usami Haruka (宇佐美 はるか)
Shun and Yuuna's new sister since their parents have married. Haruka is one day older than Yuuna so she makes Yuuna call her 'onee-chan'.

- **Gender:** Female
- **Measurements:** Height: 156cm, Bust-Waist-Hips: 91-56-89cm
- **Birthday:** 31 October
- **Hair:** Pink, Waist Length+, Wavy, Ringlet, Parted to Side, Sidehair
- **Body:** Teen, Slim, Pale, Big Breasts
- **Clothes:** School Uniform, Pajamas, Headband, Miniskirt, Hair Flower, Naked, Panties, Baby-doll
- **Eyes:** Violet, Tareme
- **Personality:** Deredere, Airhead, Clumsy, Naive, Brother Complex, Third Person, Desu
- **Role:** Step Sister, Domestic Partner, High School Student, Middle Sister
- **Voiced by:** Matsuda Risa

### Usami Yuuna (宇佐美 優奈)
Shun's younger sister who is a first-year high school student. She's a good cook and homemaker such that Shun comments that she will make a wonderful bride someday.

- **Gender:** Female
- **Measurements:** Height: 150cm, Bust-Waist-Hips: 70-53-76cm
- **Birthday:** 1 November
- **Hair:** Blue, Ahoge, Twin Tails, Shoulder-length, Spiky Bangs, Sidehair
- **Body:** Teen, Slim, Pale
- **Clothes:** School Uniform, Pajamas, Necktie, Naked, Ribbon Hair Tie, Over The Knee Socks, Sailor School Uniform
- **Engages in:** Cooking
- **Personality:** Tsundere, Brother Complex
- **Role:** Full Sister, Domestic Partner, Student Council Member, High School Student
- **Subject of:** Teasing
- **Eyes:** Garnet, Tsurime
- **Voiced by:** Manaka Umi

## Shops
- [Official Website](https://web.archive.org/web/20150517112741/http://www.peassoft.com/game9/index.html)
- [DLsite](https://www.dlsite.com/pro/work/=/product_id/VJ009298.html)

## Releases
### Japanese
- **2011-12-22**: Amakan Ecchi na "Love Icha" Tsumechaimashita - [Official website](https://web.archive.org/web/20150517112741/http://www.peassoft.com/game9/index.html), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=15924)
- **2012-12-21**: Iinazuke wa Imouto-sama! - Regular Edition - [Official website](https://web.archive.org/web/20150503230150/http://www.peassoft.com/game9plus/index.html), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=17555)
- **2013-09-06**: Iinazuke wa Imouto-sama! - Download Edition - [Official website](https://web.archive.org/web/20150503230150/http://www.peassoft.com/game9plus/index.html), [DLsite](https://www.dlsite.com/pro/work/=/product_id/VJ007953.html)
- **2015-06-05**: Amakan Ecchi na "Love Icha" Tsumechaimashita - Download Edition - [Official website](https://web.archive.org/web/20150517112741/http://www.peassoft.com/game9/index.html), [DLsite](https://www.dlsite.com/pro/work/=/product_id/VJ009298.html)

### English
- **2015-09-11**: Iinazuke wa Imouto-sama! v0.91 - [Official website](https://web.archive.org/web/20160323031629/http://www.imoutotrans.org/)

## Tags
ADV, Blood-related Brother/Sister Incest, Non-blood-related Brother/Sister Incest, Imouto-type Heroine, Male Protagonist, Airhead Heroine, Nukige, Protagonist's Non-blood-related Sister as a Heroine, Comedic Love Triangle, Group Sex of One Male and Several Females, Under the Same Roof, Harem Ending, Unlockable Routes, Small Breast Sizes Heroine (Non-Loli), Tsundere Heroine, Unlockable Harem Ending, Defloration, Side Portraits, Only Virgin Heroines, Heroine with Visible Panties, Missionary Position, Sixty-nine, Twin Blowjob, Cunnilingus, Unlockable Choices, Harem Ending with Theme, Protagonist's Fiancee as a Heroine, Brocon Heroine, Doggy Style, Female Ejaculation, Few Choices, Naked Sprites, Threesome Ending, Cowgirl, Reverse Cowgirl, Sudden Love Interest Appearance, Defloration During Common Route, Only Protagonist's Sisters as Heroine(s), Standing Sex, Bathroom Sex, Soapy Massage, Twin Boobjob, Tribadism on Penis, Non-twin Heroine Sisters, Protagonist's Full Sister as a Heroine, High School Student Heroine, Protagonist's Younger Sister as a Heroine, Heroine with Big Breasts

## More Games from PeasSoft
- [Towakoku](https://pinovel.net/v4015)
- [Tsukushite Ageru no! ~Datte Onii-chan no Oyome-san ni Naritain da Mon~](https://pinovel.net/v4016)
- [Koiiro Chu! Lips](https://pinovel.net/v4017)
- [Tsukushite Ageru no ni!!](https://pinovel.net/v641)
- [Tsukushite Ageru no ni!! Okaeshi Disc](https://pinovel.net/v7434)
- [Tsun na Kanojo Dere na Kanojo](https://pinovel.net/v1336)
- [Ama Ane](https://pinovel.net/v3034)
- [Kimi o Aogi Otome wa Hime ni](https://pinovel.net/v5942)
- [Amakan Ecchi na "Love Icha" Tsumechaimashita](https://pinovel.net/v7752)
- [Iinazuke wa Imouto-sama!](https://pinovel.net/v11086)
- [Zutto Tsukushite Ageru no!](https://pinovel.net/v8439)
- [Shitsuji ga Aruji o Erabu Toki](https://pinovel.net/v10932)
- [Koi × Koi = ∞ ~Koisuru Otome ni Dekiru Koto~](https://pinovel.net/v12377)
- [Koisuru Shimai no Sextet](https://pinovel.net/v13353)
- [Mainichi ga Harem Sugite Ore wa Yome o Kimerarenai!](https://pinovel.net/v16068)
- [Chuunibyou na Kanojo no Love Equation](https://pinovel.net/v16489)

---
*View the full details at [pinovel.net/v11086](https://pinovel.net/v11086).*

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