---
title: "Ichiban Janakya Dame Desu ka?"
description: "A slightly old-fashioned wooden apartment called Ittokikan (Maison Ittoki) lies at the top of a gentle slope located nine minutes walk from the train station. I"
image: "https://t.vndb.org/cv/56/89256.jpg"
---

# Ichiban Janakya Dame Desu ka?

![Ichiban Janakya Dame Desu ka?](https://t.vndb.org/cv/56/89256.jpg)

**Alternative Title:** 1番じゃなきゃダメですかっ？

**Aliases:** 一番じゃなきゃダメですかっ？

**Developer:** Rosebleu

**Release date:** Sep 27, 2013

**Platform:** Windows, iOS, Android

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

**Rating:** 6.8/10 (74 votes)

## Description
A slightly old-fashioned wooden apartment called Ittokikan (Maison Ittoki) lies at the top of a gentle slope located nine minutes walk from the train station. It is a place inhabited only by girls who are disappointed with their male siblings. Shou was to be a new resident, but naturally he was refused entry to the apartment. However, he was able to open their hearts with his initiative and positive disposition and was accepted into their group. In turn, they became lovestruck with him and it was suggested that he become an older brother figure to everyone in the household. This prompted the declaration by his non-blood related imouto Hisui that she will stop being his imouto. Could they be satisfied all being second for his love?

[From [Hau~ Omochikaeri!](http://omochikaeri.wordpress.com/2013/09/27/september-2013-eroge-releases/)]

## Characters
### Futaba Shou (二葉 晶)
- **Gender:** Male
- **Measurements:** Height: 176cm
- **Birthday:** 16 June
- **Personality:** Proactive, Pervert, Kind, Funny
- **Role:** Orphan

### Futaba Hisui (二葉 翡翠)
- **Gender:** Female
- **Measurements:** Height: 153cm, Bust-Waist-Hips: 82-57-80cm, C cup
- **Birthday:** 26 June
- **Hair:** Blond, Hime Cut, Waist Length+, V Bangs, Sidehair
- **Body:** Teen, Slim, Pale
- **Clothes:** School Uniform, Knee-high Socks, Knee-high Boots
- **Role:** Orphan, Non-blood-related Sister, Younger Sister
- **Eyes:** Amber, Tareme
- **Personality:** Brother Complex, Watashi
- **Voiced by:** Umbrella

### Ichimine Kohaku (一峰 琥珀)
- **Gender:** Female
- **Alias:** Koha-senpai
- **Measurements:** Height: 161cm, Bust-Waist-Hips: 87-58-82cm, E cup
- **Birthday:** 18 November
- **Hair:** Black, Waist Length+, Sidehair
- **Body:** Teen, Slim, Pale
- **Clothes:** School Uniform, Sweater, Cross Necklace, Miniskirt, Sports Shoes, Thigh-high Stockings, Hairpin, Pleated Skirt
- **Personality:** Proactive, Relaxed, Refined, Kind, Stubborn, Atashi, Emotional, Romantic, Observant
- **Role:** Daughter, Full Sister, Senpai, High School Student, Yamato Nadeshiko, Older Sister, Ojousama, Ane Act
- **Eyes:** Teal
- **Voiced by:** Gogyou Nazuna

### Isawa Hotaru (五和 蛍)
- **Gender:** Female
- **Measurements:** Height: 148cm, Bust-Waist-Hips: 81-57-81cm, C cup
- **Birthday:** 12 June
- **Hair:** Red, Ahoge, Shoulder-length, V Bangs, Parted to Side
- **Body:** Teen, Slim, Pale
- **Clothes:** School Uniform, Knee-high Socks, Maid's Dress, Maid's Headdress, Off-The-Shoulder Shirt
- **Role:** Orphan, Childhood Friend, Maid, Non-blood-related Sister, Non-blood-related Daughter
- **Engages in:** Cooking, Cleaning, Teasing
- **Eyes:** Amber
- **Personality:** Carefree, Kind, Energetic, Watashi, Workaholic, Loud
- **Voiced by:** Himari

### Mitsuki Ruri (三月 瑠璃)
- **Gender:** Female
- **Aliases:** RuriRuri, Ruripon, Ruu-chan
- **Measurements:** Height: 147cm, Bust-Waist-Hips: 78-55-79cm, B cup
- **Birthday:** 6 July
- **Hair:** Violet, Hime Cut, Waist Length+, Straight, Blunt Bangs
- **Body:** Teen, Slim, Pale
- **Clothes:** School Uniform, Dress, Hair Ribbon, Headband, Stockings, Swimsuit
- **Eyes:** Blue
- **Personality:** Deredere, Serious, Misandrist, Watashi
- **Role:** Daughter, Full Sister, Non-blood-related Sister, Classmate, Wealthy, High School Student
- **Subject of:** Teasing
- **Engages in:** Swimming
- **Voiced by:** Misonoo Mei

### Shijou Sango (四条 珊瑚)
- **Gender:** Female
- **Measurements:** Height: 157cm, Bust-Waist-Hips: 83-56-81cm, D cup
- **Birthday:** 31 August
- **Hair:** White, Shoulder-length, Straight, Spiky Bangs
- **Body:** Teen, Slim, Pale
- **Clothes:** School Uniform, Jacket, Miniskirt, Shorts, Hoodie, Leggings, Knee-high Boots
- **Eyes:** Amber, Jitome
- **Personality:** Stoic, Shy, Mature, Watashi, Dandere, Stutter
- **Role:** Full Sister
- **Subject of:** Teasing
- **Voiced by:** Ogura Yui

### Kusakabe Ai (日下部 藍)
- **Gender:** Female
- **Measurements:** Height: 145cm, Bust-Waist-Hips: 75-53-77cm, A cup
- **Birthday:** 10 October
- **Hair:** Blue, Ponytail, Long, Straight, Parted to Side, Sidehair
- **Body:** Teen, Slim, Pale
- **Clothes:** School Uniform, Ankle Socks, Sailor School Uniform
- **Eyes:** Violet
- **Personality:** Friendly, Kind, Energetic, Mischievous, Atashi
- **Engages in:** Teasing
- **Role:** Classmate, High School Student
- **Voiced by:** Fujino Rika

### Miwa Akane (美和 茜)
- **Gender:** Female
- **Measurements:** Height: 160cm, Bust-Waist-Hips: 79-55-78cm, B cup
- **Birthday:** 20 September
- **Hair:** Brown, Twin Tails, Waist Length+, Straight
- **Body:** Teen, Slim, Pale
- **Clothes:** School Uniform, Ankle Socks, Sailor School Uniform
- **Eyes:** Green
- **Role:** Friend, Classmate, High School Student
- **Personality:** Refined, Energetic, Grumbler, Talkative, Watashi, Loud
- **Voiced by:** Aoyama Yukari

### Sakagami Gekkou (坂上 月光)
- **Gender:** Male
- **Measurements:** Height: 177cm
- **Birthday:** 17 December
- **Hair:** Black, Short
- **Body:** Teen, Slim, Pale
- **Clothes:** School Uniform, Glasses
- **Eyes:** Black
- **Personality:** Boku
- **Role:** Classmate, High School Student
- **Voiced by:** Miraku Akira

### Sasamoto Yukiha (笹本 雪羽)
- **Gender:** Female
- **Measurements:** Height: 161cm, Bust-Waist-Hips: 89-60-87cm
- **Birthday:** 25 November
- **Hair:** Long, Wavy, Grey
- **Body:** Teen, Slim, Pale
- **Clothes:** School Uniform, Hair Ribbon, Knee-high Socks
- **Eyes:** Green
- **Personality:** Friendly, Kind
- **Voiced by:** Fujimura Suzuka

### Yamanoue Amaha (山之上 天葉)
- **Gender:** Female
- **Measurements:** Height: 150cm, Bust-Waist-Hips: 82-54-85cm
- **Birthday:** 3 March
- **Hair:** Blond, Waist Length+
- **Body:** Teen, Slim, Pale
- **Clothes:** School Uniform, Thigh-high Stockings, Hair Tie
- **Personality:** Hard Worker, Refined
- **Eyes:** Amber
- **Role:** Student Council President
- **Voiced by:** Hoshino Nanami

## Shops
- [Official Website](http://www.rosebleu.jp/rrrr/)
- [DLsite](https://www.dlsite.com/pro/work/=/product_id/VJ008326.html)
- [Getchu](http://www.getchu.com/soft.phtml?id=771496)

## Releases
### Japanese
- **2013-08-22**: Ichiban Janakya Dame Desu ka? - Trial Edition - [Official website](http://www.rosebleu.jp/rrrr/etc/trial.html)
- **2013-09-27**: Ichiban Janakya Dame Desu ka? - Package Edition - [Official website](http://www.rosebleu.jp/rrrr/), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=18935), [Getchu](http://www.getchu.com/soft.phtml?id=771496)
- **2014-01-31**: Ichiban Janakya Dame Desu ka? - Download Edition - [Official website](http://www.rosebleu.jp/rrrr/), [DLsite](https://www.dlsite.com/pro/work/=/product_id/VJ008326.html), [Gyutto](https://gyutto.com/i/item118720), [Digiket](https://www.digiket.com/work/show/_data/ID=ITM0095847/), [DL.Getchu](http://dl.getchu.com/i/item1004681), [DMM](https://dlsoft.dmm.co.jp/detail/ggs_0885/)
- **2014-10-24**: Ichiban Janakya Dame Desu ka? - [Google Play](https://play.google.com/store/apps/details?id=net.moeapp.avg.ichiban_gp)
- **2014-11-17**: Ichiban Janakya Dame Desu ka?

### Chinese (simplified)
- **TBA**: Ichiban Janakya Dame Desu ka? - [Official website](https://tieba.baidu.com/p/8571334765)

## Tags
Sexual Content, ADV, High School, Romance, Comedy, Protagonist's Senpai as a Heroine, Male Protagonist, Drama, Multiple Endings, School Life Comedy, Relationship Problems, Foolish Friend, Late Branching Plot, Ojousama Heroine, Deredere Heroine, Protagonist's Childhood Friend as a Heroine, Family, Protagonist's Non-blood-related Sister as a Heroine, Late Sexual Content, Group Sex of One Male and Several Females, School Dormitory, Under the Same Roof, Protagonist's Kouhai as a Heroine, Episodic Story, Other Perspectives, Proactive Protagonist, Protagonist with a Face, Defloration, Orphan Heroine, Orphan Protagonist, Brocon Heroine, Perverted Friend, Threesome Ending, High School Student Heroine, Only Virgin Heroines, Protagonist's Younger Sister as a Heroine, Non-blood-related Brother/Sister Incest

## More Games from Rosebleu
- [Stellar ☆ Theater](https://pinovel.net/v1185)
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- [Tiny Dungeon ~BLESS of DRAGON~](https://pinovel.net/v5412)
- [Stellar ☆ Theater Encore](https://pinovel.net/v7064)
- [Tiny Dungeon ~BIRTH for YOURS~](https://pinovel.net/v7065)
- [Hyouka no Mau Sora ni](https://pinovel.net/v8174)
- [Tiny Dungeon ~BRAVE or SLAVE~](https://pinovel.net/v9754)
- [Inpyuri -Hito to Anata to Ayakashi to-](https://pinovel.net/v11686)
- [Ichiban Janakya Dame Desu ka?](https://pinovel.net/v12479)
- [Endless Dungeon](https://pinovel.net/v14270)
- [Sekai o Sukuu Dake no Kantan na Oshigoto](https://pinovel.net/v15147)
- [Valkyrie Runabout!](https://pinovel.net/v16476)

---
*View the full details at [pinovel.net/v12479](https://pinovel.net/v12479).*

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