---
title: "Mamiya-kunchi no Itsutsugo Jijou"
description: "The Mamiya household that runs the seaside cafe Seamore is comprised of a set of quintuplets and their parents.  Cheerful, active and positive eldest daughter Y"
image: "https://t.vndb.org/cv/73/100673.jpg"
---

# Mamiya-kunchi no Itsutsugo Jijou

![Mamiya-kunchi no Itsutsugo Jijou](https://t.vndb.org/cv/73/100673.jpg)

**Alternative Title:** 間宮くんちの五つ子事情

**Aliases:** 间宫家五个孩子的事, The quintuplets situation of the Mamiya family.

**Developer:** CUBE

**Release date:** Feb 26, 2016

**Platform:** Windows, Android

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

**Rating:** 7.3/10 (158 votes)

## Description
The Mamiya household that runs the seaside cafe Seamore is comprised of a set of quintuplets and their parents.

Cheerful, active and positive eldest daughter Yakumo, who is bright and excels at sports, even if she is sometimes quite clumsy.

Kind second daughter Moeri has the most common sense and is good at looking after others, but she can’t be honest with her feelings with the one she loves.

Oldest son Ryouta helps resolve any problems among the sisters, who greatly love and rely on him.

Third daughter Tamane is a domestic girl who takes care of most of the housework. She is a bit concerned about her weight lately.

Cat-like youngest daughter Nekoto doesn’t speak much and is a bit strange, but she makes friends very easily.

Even though they’re sometimes worried about their father’s tendency to wander, life in the Mamiya household is relatively peaceful.

However, one day just before summer vacation, the wealthy Ririka who had fallen in love with Ryouta at first sight, transferred into their school. She declared that she will take Ryouta to be her husband under the pretext that her family had lent their family money to start up the cafe and that she would erase their debt. His sisters sensed a strong danger that their dear brother would be taken away by a total stranger, so they decided to work hard to pay off the debt before the summer ends.

[From [Hau~ Omochikaeri!](https://omochikaeri.wordpress.com/2016/02/06/february-2016-eroge-releases/)]

## Characters
### Mamiya Ryouta (間宮 良太)
The second youngest sibling of the Mamiya quintuplets. A serious but kind boy with a firm character, he mainly stays in the shadow unlike his sisters. A jack-of-all-trades who also acts as the tsukkomi, often pulling the brakes when things get too crazy or out of hand.

Like Tamane and Yakumo, Ryouta is not part of the any club and instead, just helps out part-timely at Seamore just like his other siblings.

He doesn't understand that his sisters are all in love with him and just shakes off the whole thing as "family love".

- **Gender:** Male
- **Aliases:** Ryou-chan, Ryou-kun
- **Measurements:** Height: 175cm
- **Birthday:** 5 May
- **Hair:** Black, Spiky Bangs
- **Body:** Teen, Slim, Pale
- **Clothes:** Vest, Swim Shorts, Waitstaff Uniform
- **Personality:** Ore, Kind, Serious
- **Role:** Betrothed, Son, Full Brother, Cousin, Waitstaff, Classmate, High School Student, Tsukkomi, Part-time Worker, School "Go Home Club" Member, Middle Brother, Triplet+ Brother, Title Character
- **Engages in:** Swimming

### Mamiya Moeri (間宮 萌莉)
What she calls the [url=/c38571]protagonist[/url]: Ryouta

The second daughter of the Mamiya quintuplets. Out of her siblings, she's the one with the most common sense, and acts quite often as the tsukkomi. She's good at taking care of others, but at school she shows her strict side as she's part of the discipline committee.

At Seamore, she does not only work as a waitress, but she's also in charge of the accounting.

Like her sisters, she also has a some kind of a kink related to Ryouta. Moeri is extremely attracted to Ryouta's scent, not to mention she loves masturbating and turns on pretty easily.

- **Gender:** Female
- **Measurements:** Height: 156cm, Bust-Waist-Hips: 82-57-84cm, C cup
- **Birthday:** 5 May
- **Hair:** Violet, Twin Tails, Intake, Spiky Bangs
- **Body:** Teen, Slim, Pale
- **Clothes:** School Uniform, Knee-high Socks, Bikini, Cuffs, Clothing with Ribbons, Ribbon Hair Tie, Waitstaff Uniform, Open Cup Bra
- **Eyes:** Blue
- **Personality:** Tsundere, Kind, Brother Complex, Pragmatic, Watashi, Closet Pervert
- **Role:** Daughter, Waitstaff, High School Student, Tsukkomi, Part-time Worker, Discipline Committee Member, Middle Sister, Triplet+ Sister, Title Character
- **Voiced by:** Sakurano Hiyo

### Mamiya Nekoto (間宮 音琴)
What she calls the [url=/c38571]protagonist[/url]: Onii-chan

The youngest daughter as well as the youngest sibling of the Mamiya quintuplets. She calls her siblings all "onii-chan" and "onee-chan". She is considered as the official mascot of the quintuples at Seamore and in school. A sleepyhead and taciturn, it's always hard to tell what Nekoto is thinking about. She s also a member of the fortune telling club at school, and is quite popular due to this.

At Seamore, Nekoto is the one responsible for the drinks. At times, when requested, she'll do some fortune telling as extra work as well.

Being a mimidoshima (a person with lots of knowledge about sex), she is quite proud of her knowledge and about the fact that she knows even more than Ryouta. Nekoto is also very interested in sex and especially being the dominant one of the relationship.

- **Gender:** Female
- **Alias:** Neko-chan
- **Measurements:** Height: 147cm, Bust-Waist-Hips: 76-50-75cm, A cup
- **Birthday:** 5 May
- **Hair:** Blue, Waist Length+, Kemonomimi, Blunt Bangs
- **Body:** Teen, Slim, Pale
- **Clothes:** School Uniform, Glasses, Shorts, Sports Shoes, Tank Top, Bikini, Cuffs, Clothing with Ribbons, Waitstaff Uniform, Over The Knee Socks, Sailor School Uniform, Pin-Back Button
- **Engages in:** Cooking
- **Eyes:** Amber
- **Personality:** Pervert, Stoic, Brother Complex, Taciturn, Watashi, Sleepyhead
- **Role:** Daughter, Waitstaff, High School Student, Younger Sister, Part-time Worker, School Extraordinary Club Member, Fortune Teller, Triplet+ Sister, Title Character
- **Voiced by:** Shirano Miyuki

### Mamiya Tamane (間宮 珠音)
What she calls the [url=/c38571]protagonist[/url]: Ryou-kun

The third daughter of the Mamiya quintuplets. She is quite motherly and the one responsible for the housework at their home. She also loves food.

At Seamore, Tamane works as the cafe's cook alongside her parents, while at the same time learning all kinds of different techniques related to cooking. Due to this, she's not part of any club or committee at the high school.

Tamane's tongue and lips are her main erogenous zones: just a kiss from her dear Ryouta can already get her turned on.

- **Gender:** Female
- **Measurements:** Height: 148cm, Bust-Waist-Hips: 89-57-87cm, F cup
- **Birthday:** 5 May
- **Hair:** Brown, Shoulder-length, Straight, Sidehair, Tiny Braid
- **Eyes:** Brown, Tareme
- **Body:** Teen, Slim, Pale
- **Clothes:** School Uniform, Knee-high Socks, Bikini, Cuffs, Clothing with Ribbons, Ribbon Hair Tie, Waitstaff Uniform, Mary Jane
- **Engages in:** Cooking, Cleaning
- **Role:** Daughter, Cook, High School Student, Yamato Nadeshiko, Part-time Worker, School "Go Home Club" Member, Middle Sister, Triplet+ Sister, Title Character
- **Personality:** Timid, Kind, Food Lover, Watashi
- **Voiced by:** Tsukishiro Mana

### Mamiya Yakumo (間宮 八雲)
What she calls the [url=/c38571]protagonist[/url]: Ryou-chan

The oldest daughter of the Mamiya quintuplets and a very outgoing and popular girl, she always has a group of people around her. She also has excellent grades and is good at all sports, but she loves swimming the most, especially swimming in the ocean. She does have her clumsy side too. In fact, Yakumo is a very clumsy girl, but she does her best to hide this fact from Ryouta, and look like the perfect older sister in his eyes.

Like [url=/c38568]Tamane[/url], Yakumo is not part of any club and instead, spends most of her free time working as a waitress at Seamore. Thanks to her assistance, the sales have raised up and she is quite popular with the customers as well, offering lively and good service to them.

Like her sisters, she also has a some kind of a kink related to Ryouta. Yakumo has the voice kink, meaning that she immediately turns on whenever Ryouta whispers anything or just sweet nothings to her.

- **Gender:** Female
- **Measurements:** Height: 160cm, Bust-Waist-Hips: 84-58-86cm, D cup
- **Birthday:** 5 May
- **Hair:** Blond, Waist Length+, Spiky Bangs, Sidehair
- **Body:** Teen, Slim, Pale
- **Clothes:** School Uniform, Sweater, Headband, Knee-high Socks, Bikini, Cuffs, Ribbon Hair Accessory, Transparent, Waitstaff Uniform, Sailor School Uniform
- **Eyes:** Green
- **Personality:** Outgoing, Clumsy, Brother Complex, Watashi
- **Role:** Daughter, Waitstaff, High School Student, Popular, Older Sister, Part-time Worker, School "Go Home Club" Member, Triplet+ Sister, Title Character
- **Engages in:** Cleaning, Swimming
- **Items:** Mobile Phone
- **Voiced by:** Kotorii Yuuka

### Shijouin Ririka (四条院 莉里香)
What she calls the protagonist: Ryouta

The only daughter of the prominent Shijouin family. She transferred to [url=/c38571]Ryouta's[/url] school after falling in love with him at first sight and declared him to be her husband. Despite her confident personality, she is quite shy and bad at making friends.

[spoiler]After her declaration to make Ryouta's her husband, she later intruded herself to Ryouta's family cafe to live with him in the name of her family's cooperation with his family's cooperation. However, it is revealed later that she has done this without her family's consent. [/spoiler]

- **Gender:** Female
- **Measurements:** Height: 158cm, Bust-Waist-Hips: 85-55-84cm, E cup
- **Birthday:** 24 January
- **Hair:** Waist Length+, Straight, Spiky Bangs, Sidehair
- **Body:** Teen, Slim, Pale, Big Breast Sizes
- **Clothes:** School Uniform, Glasses, Pantyhose, Sailor School Uniform
- **Eyes:** Violet
- **Personality:** Deredere, Shy, Confident, Watakushi, Dishonest
- **Role:** Betrothed, Domestic Partner, Waitstaff, Classmate, High School Student, Transfer Student, Part-time Worker, Ojousama
- **Engages in:** Moving
- **Voiced by:** Haruka Sora

### Mamiya Haruna (間宮 陽菜)
What she calls the protagonist: Ryou-chan

The quintuplets' mother who has a kind personality. She is always seen with a smile on her face, and is a good wife as well. Haruna supports her husband from the shadows by taking up the role as Seamore's manager.

Because of her young appearance, she is often though to be the quintuplets' older sister instead of mother. Haruna loves her children very much and is always giving the girls consultation - whether it be about love or other matters.

- **Gender:** Female
- **Measurements:** Height: 158cm, Bust-Waist-Hips: 84-56-86cm, D cup
- **Birthday:** 10 May
- **Hair:** Red, Bun, Wavy, Short, No Bangs, Parted in Middle, Sidehair
- **Eyes:** Red
- **Body:** Young-adult, Younger Appearance
- **Personality:** Friendly, Altruistic
- **Role:** Wife, Mother, Aunt, Shopkeeper, Title Character
- **Clothes:** Blouse, Capri Pants
- **Engages in:** Not Sexually Involved
- **Voiced by:** Rokubangai Mari

### Mamiya Kojirou (間宮 小次郎)
What he calls the protagonist: Ryouta

The quintuplets' father. He loves spoiling his daughters, though they see their father as kind of annoying. He loves his wife wholeheartedly and rarely gets into any fights with her.

Kojirou is a master at cooking and works as the head chef of Seamore, while teaching [url=/c38568]Tamane[/url] everything he knows about cooking. At times, he goes on journeys to do some research about all kinds of cooking styles and so on. It's become such a normal thing in the family that nobody is surprised even when Kojirou disappears somewhere, only to come back from a journey...

- **Gender:** Male
- **Measurements:** Height: 178cm
- **Birthday:** 21 June
- **Hair:** Blue, Curtained, Short, Spiky Bangs, Thick Eyebrows
- **Engages in:** Cooking, Teasing, Not Sexually Involved
- **Eyes:** Blue
- **Body:** Adult, Muscular
- **Clothes:** T-shirt, Sandals, Aloha Shirt
- **Personality:** Ore
- **Role:** Husband, Father, Uncle, Cook, Title Character
- **Voiced by:** Akizuki Hideyuki

### Mamiya Kyouka (間宮 京花)
What she calls the protagonist: Ryouta-kun

The gentle older cousin, an English teacher and the homeroom teacher of [url=/c38571]Ryouta's[/url] class. She also helps managing the lost & found service at the school.

Kyouka takes her job seriously and has a honest personality, which has made her popular with both her students and coworkers. She takes her students into consideration, and is especially concerned of [url=/c38570]Ririka[/url] who has a hard time making friends.

Kyouka loves Ryouta more than anything and tries her best to show her appeal to him. She even wants to marry him (since it's okay to get married to your cousin) and has even received approval from her own parents. Especially lately Kyouka has been keeping her eyes open for all possible chances.

- **Gender:** Female
- **Measurements:** Height: 162cm, Bust-Waist-Hips: 92-59-88cm, G cup
- **Birthday:** 5 October
- **Hair:** Waist Length+, Wavy, Grey, Parted to Side, Sidehair
- **Eyes:** Brown, Tareme
- **Body:** Slim, Pale, Young-adult
- **Personality:** Hard Worker, Deredere, Kind, Honest, Watashi
- **Clothes:** Shirt, Miniskirt, Blouse, Bracelet
- **Role:** Niece, Cousin, Teacher, Homeroom Teacher, Title Character
- **Subject of:** Teasing
- **Voiced by:** Moriya Kokoro

### Shirai Rokubee (白井 六兵衛)
What he calls the protagonist: Ryouta

[url=/c38571]Ryouta's[/url] best friend and classmate. He is also friends with his sisters. He is very passionate about his hobby, watching gravure idol videos, which he can talk a lot about. Even though he often teases Ryouta, Rokubee is a reliable friend who is always ready to help his bro out.

- **Gender:** Male
- **Measurements:** Height: 173cm
- **Birthday:** 20 July
- **Hair:** Brown, Short, Shaggy
- **Body:** Teen, Slim, Pale
- **Eyes:** Violet, Tareme
- **Clothes:** Glasses
- **Personality:** Ore, Pervert, Kind, Talkative
- **Role:** Friend, Classmate, High School Student
- **Engages in:** Teasing, Not Sexually Involved
- **Voiced by:** Ootaki Renjirou

## Shops
- [Official Website](http://www.cuffs-cube.jp/products/mamiya/)
- [Getchu](http://www.getchu.com/soft.phtml?id=1292104)

## Releases
### Japanese
- **2016-01-27**: Mamiya-kunchi no Itsutsugo Jijou - Trial Edition - [Official website](http://www.cuffs-cube.jp/products/mamiya/download/trial/)
- **2016-02-26**: Mamiya-kunchi no Itsutsugo Jijou - First Press Edition - [Official website](http://www.cuffs-cube.jp/products/mamiya/), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=22475), [Melonbooks.co.jp](https://www.melonbooks.co.jp/detail/detail.php?product_id=143196), [Getchu](http://www.getchu.com/soft.phtml?id=876497)
- **2016-03-25**: Mamiya-kunchi no Itsutsugo Jijou - Download Edition - [Official website](http://www.cuffs-cube.jp/products/mamiya/), [DMM](https://dlsoft.dmm.co.jp/detail/cuffs_0013/)
- **2017-07-21**: Kurano-kun & Mamiya-kun no W Jijou Pack - [DMM](https://dlsoft.dmm.co.jp/detail/cuffs_0017pack/)
- **2021-02-26**: Cube Collection Box - Kanekiyo Miwa Edition - [Official website](http://www.cuffs.co.jp/products/cube_collection02/), [Melonbooks.co.jp](https://www.melonbooks.co.jp/detail/detail.php?product_id=778758), [Getchu](http://www.getchu.com/soft.phtml?id=1117629), [DMM](https://www.dmm.co.jp/mono/pcgame/-/detail/=/cid=1578apc13844/), [Toranoana](https://ec.toranoana.shop/tora/ec/item/210006619266/)
- **2024-08-30**: Mamiya-kunchi no Itsutsugo Jijou - Popular Edition - [Official website](http://www.cuffs-cube.jp/products/mamiya/), [Melonbooks.co.jp](https://www.melonbooks.co.jp/detail/detail.php?product_id=2453774), [Getchu](http://www.getchu.com/soft.phtml?id=1292104)

### Chinese (simplified)
- **2019-11-09**: Mamiya-kunchi no Itsutsugo Jijou - [Official website](https://tieba.baidu.com/p/6332658131)
- **2024-05-13**: Jiangong-jia de Wuzi Qingshi - [Official website](https://github.com/slqy123/mamiya-chs)

## Tags
ADV, High School, Blood-related Incest, Brother/Sister Incest, Blood-related Brother/Sister Incest, Male Protagonist, Slice of Life Comedy, Father Support Character, Mother Support Character, Ojousama Heroine, Deredere Heroine, Twin Sisters as Heroines, Group Sex of One Male and Several Females, Early Sexual Content, Unlockable Routes, Cafe, Transfer Student Heroine, Tsundere Heroine, Clumsy Heroine, Defloration, Sex in Public Places, Only Virgin Heroines, Twin Tail Heroine, Missionary Position, Protagonist's Twin as a Heroine, Super Deformed CGs, Sounds of Copulation, Twin Blowjob, Intercrural Sex, Ejaculation Forewarner, Cunnilingus, Discipline Committee Member Heroine, Twincest, Doggy Style, Heroine with a Fang, Outdoor Sex, Naked Sprites, Cowgirl, Choices with 4 or More Options, Standing Sex, Sitting Sex, Spoons, Oppai Loli Heroine, Background Moans, Quadruple+ Blowjob, Reverse Missionary, Quickie Fix Position, Hero(ine) Selection, Sex at School, Tribadism on Penis, Perverted Heroine, Twin Buttjob, Twin Handjob, Pantyjob, Pragmatic Heroine, System Time Events, Vaginal Masturbation, Pissing, Vaginal Fingering, Straight Lolicon, High School Student Heroine, Sex with Protagonist Only, Ejaculation Choice, Incest Romance, High Sexual Content, Unlockable Harem Ending, Brocon Heroine, Condoms, Single Blowjob, Anal Sex, Protagonist's Older Sister as a Heroine, High School Student Protagonist, Anal Fingering, Mutual Masturbation, Single Handjob, Reverse Cowgirl, Sixty-nine, Waitress Heroine, Single Boobjob, Yamato Nadeshiko Heroine, Heroine with Big Breasts, Female Ejaculation, Heroine with Small Breasts (Non-Loli), Discreet Phone Sex, Public Masturbation, Cousin Incest, Protagonist's Cousin as a Support Character, Heroine with Glasses, Heroine with Swimsuits, Protagonist's Younger Sister as a Heroine

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---
*View the full details at [pinovel.net/v18147](https://pinovel.net/v18147).*

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