---
title: "Mainichi Shabutte Ii Desu ka? ~1-Heya-Manyuu Kazoku~"
description: "Protagonist is excited to finally be released from the hospital after a long stay. However, upon returning home, he finds out that his family lives in an abnorm"
image: "https://t.vndb.org/cv/30/16130.jpg"
---

# Mainichi Shabutte Ii Desu ka? ~1-Heya-Manyuu Kazoku~

![Mainichi Shabutte Ii Desu ka? ~1-Heya-Manyuu Kazoku~](https://t.vndb.org/cv/30/16130.jpg)

**Alternative Title:** 毎日しゃぶっていいですか？ ～1部屋-魔乳家族～

**Developer:** OLE-M

**Release date:** Nov 22, 2012

**Platform:** Windows

**Language:** Japanese, English

**Rating:** 7.3/10 (200 votes)

## Description
Protagonist is excited to finally be released from the hospital after a long stay. However, upon returning home, he finds out that his family lives in an abnormally small room and consists of six people, him being the only male, with all females having extremely large breasts. His mother explains to him that it ended up like this because of his hospital bills, but the reason he ended up in the hospital in the first place was because he accidentally touched his sister's boobs and got thrown out a window. The story follows his summer days in this cramped room, with constant accidental breast touches and no privacy to masturbate.

## Characters
### Ichii Yuudai (市位 雄大)
- **Gender:** Male
- **Hair:** Brown, Short
- **Eyes:** Hidden
- **Personality:** Pervert, Womanizer, Dogmatic
- **Role:** Son, Full Brother, Boyfriend, Vampire
- **Engages in:** Murder, Infidelity, Elopement, Polyamory, Breakup
- **Subject of:** Illness, Disability, Hospitalization, Guilt
- **Items:** Wheelchair

### Hijiri Kotoko (聖 琴子)
The daughter of a prestigious tea ceremony master. Proud and haughty in nature.

Strong-willed, she acts particularly prickly toward the protagonist. When angry or emotionally charged, she sometimes lets slip vulgar language.

[From [url=http://www.ole-m.net/products/manyu/chara/chara.html#kotoko]official site[/url]]

- **Gender:** Female
- **Measurements:** Height: 159cm, Bust-Waist-Hips: 94-58-86cm, H cup
- **Birthday:** 26 February
- **Hair:** Violet, Waist Length+
- **Body:** Teen, Slim, Pale, Dark, Tanline, Tanned, Huge Breasts
- **Clothes:** School Uniform, Thigh-high Stockings
- **Eyes:** Amber
- **Role:** Class President, High School Student, Customizable Appearance
- **Personality:** Arrogant, Stubborn, Assertive
- **Subject of:** Homicide
- **Voiced by:** Haruna Ren

### Himeno Niki (姫野 二季)
The older twin sister. A transfer student who becomes the protagonist's girlfriend.

Her positive and fearless personality makes her a mood-maker who livens up any gathering when she's around.
She actually does secretly reflect on her own overly forceful actions sometimes...

On the other hand, she has a habit of playing with her hair when embarrassed and is shy when it comes to romance.

[From [url=http://www.ole-m.net/products/manyu/chara/chara.html#niki]official site[/url]]

- **Gender:** Female
- **Measurements:** Height: 165cm, Bust-Waist-Hips: 103-58-90cm, I cup
- **Birthday:** 12 October
- **Hair:** Red, Ahoge, Short
- **Body:** Teen, Slim, Pale, Dark, Tanline, Tanned, Huge Breasts
- **Clothes:** School Uniform, Thigh-high Stockings, Mail Armor, Belt, Cape, Choker
- **Items:** Sword, Axe, Crossbow
- **Engages in:** Fighting, Polyamory
- **Eyes:** Amber
- **Personality:** Outgoing, Brave, Flustered
- **Role:** Twin Sister, Girlfriend, High School Student, Transfer Student, Customizable Appearance, Half Vampire, Vampire Hunter
- **Subject of:** Pregnancy, Infidelity, Breakup
- **Voiced by:** Aikawa Kei

### Himeno Shirayuki (姫野 白幸)
The younger twin sister. The transfer student and the second girl who becomes the protagonist's girlfriend. The complete opposite of Niki—put nicely, she's laid-back; put bluntly, she's gloomy.

I feel like someone's watching me... and when I turn around, it's definitely Shirayuki. She stalks the protagonist, secretly researching his preferences.

[From [url=http://www.ole-m.net/products/manyu/chara/chara.html#sirayuki]official site[/url]]

- **Gender:** Female
- **Measurements:** Height: 166cm, Bust-Waist-Hips: 92-58-90cm, F cup
- **Birthday:** 12 October
- **Hair:** Black, Waist Length+
- **Body:** Teen, Slim, Pale, Dark, Tanline, Tanned, Big Breasts
- **Clothes:** School Uniform, Pantyhose, Guimpe, Utility Belt
- **Engages in:** Fighting, Stalking, Polyamory
- **Eyes:** Amber
- **Personality:** Stoic, Serious, Blunt, Gloomy
- **Role:** Twin Sister, Girlfriend, High School Student, Transfer Student, Customizable Appearance, Half Vampire, Vampire Hunter
- **Subject of:** Pregnancy, Infidelity
- **Items:** Cross
- **Voiced by:** Aozora Ramune

### Ichii Erisa (市位 絵里沙)
A bright, pure, and honest little sister who adores her big brother with a loli-punk cute vibe. She's several years younger and attends a different academy than the protagonist.

She shields her brother, who feels awkward in their matriarchal family, saying things like, “Please don't bully my big brother!”

Sadly, she's the protagonist's sole source of comfort. Her innocence leaves her vulnerable in many ways, driving her brother crazy.

[From [url=http://www.ole-m.net/products/manyu/chara/chara.html#erisa]official site[/url]]

- **Gender:** Female
- **Measurements:** Height: 155cm, Bust-Waist-Hips: 90-55-83cm, E cup
- **Birthday:** 9 April
- **Hair:** Waist Length+, Green, Sidehair
- **Body:** Teen, Slim, Pale, Dark, Tanline, Tanned, Huge Breasts
- **Clothes:** School Uniform, Hair Ribbon, Cross Necklace, Thigh-high Stockings, Hair Flower, Yukata, Ribbon Tie, Pleated Skirt
- **Engages in:** Fighting, Suicide
- **Eyes:** Violet, Red
- **Role:** Vampire, High School Student, Customizable Appearance, Younger Sister, Secret Girlfriend
- **Personality:** Naive, Loyal, Brother Complex, Violent, Haraguro
- **Voiced by:** Tsuruya Haruto

### Ichii Mana (市位 魔菜)
The mother who supports the Ichii household. Or so she should be, but she rarely acts like a mother, leaving household chores to the protagonist and others.

She's reputed to be a highly accurate fortune-teller, yet the household finances remain shrouded in mystery.

With a dynamite (old-school) body, she sways her hips as she walks.

[From [url=http://www.ole-m.net/products/manyu/chara/chara.html#mana]official site[/url]]

- **Gender:** Female
- **Measurements:** Height: 168cm, Bust-Waist-Hips: 102-59-88cm, G cup
- **Birthday:** 25 December
- **Hair:** Black
- **Eyes:** Brown
- **Body:** Adult, Dark, Nail Polish, Tanline, Makeup, Tanned, Visible Nipples, Huge Breasts
- **Clothes:** Arm Warmers, Baby-doll, High Heeled Shoes
- **Personality:** Lazy, Carefree, Mysterious
- **Role:** Mother, Not a Virgin, Customizable Appearance, Familiar, Fortune Teller
- **Voiced by:** Aikawa Kei

### Ichii Mariru (市位 まりる)
The protagonist and her are like sparring partners—completely comfortable with each other. Her rebellious behavior knows no bounds, like setting a nose hook on her older brother.

Their interactions have become a local attraction. She's actually happy, but she can't be honest with het brother and awkwardly blushes instead.

Super clumsy. Her cooking skills are especially disastrous and always cause stomachaches (mainly for the protagonist).

[From [url=http://www.ole-m.net/products/manyu/chara/chara.html#mariru]official site[/url]]

- **Gender:** Female
- **Measurements:** Height: 162cm, Bust-Waist-Hips: 93-56-89cm, G cup
- **Birthday:** 22 April
- **Hair:** Pink, Ponytail, Long, Wavy
- **Body:** Teen, Slim, Pale, Dark, Tanline, Tanned, Big Breasts
- **Clothes:** School Uniform, Trousers, Miniskirt, Cape, Cravat, Magatama, Over The Knee Socks, Sailor School Uniform, Slit Skirt, Formal Shirt
- **Eyes:** Violet, Red
- **Personality:** Tsundere, Flustered, Rebellious
- **Items:** Mobile Phone
- **Role:** Vampire, High School Student, Customizable Appearance, Younger Sister
- **Engages in:** Bad Cooking
- **Voiced by:** Aozora Ramune

### Ichii Ria (市位 理愛)
The eldest daughter, sexy and glamorous enough to make anyone stare. She walks around like she owns the place, mostly bossing her younger brother around. 

When her brother agonizes over texts with her, she gives him relationship advice like, “Want to make progress? Get on your knees right there. Don't underestimate girls.” 

Her actions are bold, but deep down she's kind and takes good care of others. She's a heavy drinker who's constantly drunk.

[From [url=http://www.ole-m.net/products/manyu/chara/chara.html#ria]official site[/url]]

- **Gender:** Female
- **Measurements:** Height: 170cm, Bust-Waist-Hips: 105-60-91cm, I cup
- **Birthday:** 25 March
- **Hair:** Red, Long, Wavy, Sidehair
- **Clothes:** Trousers, Glasses, Cross Necklace, Wristband, Bikini, Sunglasses, Tube Top, Fingerless Gloves, Decorative Belt
- **Eyes:** Violet
- **Body:** Dark, Tanline, Tanned, Huge Breasts
- **Personality:** Friendly, Kind, Assertive
- **Engages in:** Alcohol Abuse
- **Subject of:** Clinical Depression
- **Role:** Vampire, Not a Virgin, Customizable Appearance, Older Sister
- **Voiced by:** Haruna Ren

### Ichii Yumeko (市位 夢子)
A stunningly beautiful, pure, and ethereal older sister of the same age. She adores flowers and animals, often playing with stray cats on her way to school, causing passing male students to fall for her at first sight. 

Yet her aura makes her seem like an unattainable beauty, often misunderstood as someone hard to approach. She deeply loves the protagonist and hopes that someday they can be together forever.

[From [url=http://www.ole-m.net/products/manyu/chara/chara.html#yumeko]official site[/url]]

- **Gender:** Female
- **Measurements:** Height: 167cm, Bust-Waist-Hips: 93-58-88cm, H cup
- **Birthday:** 27 May
- **Hair:** Black, Blond, Red, Waist Length+
- **Body:** Teen, Slim, Pale, Dark, Tanline, Tanned, Feathery Wings, Huge Breasts
- **Clothes:** School Uniform, Cravat, Tube Top, Ankle Socks, Pleated Skirt, Tiara, Sailor School Uniform, Thong Panties, Fishnet Garter Belt Stockings
- **Eyes:** Amber
- **Role:** Full Sister, Vampire, High School Student, Customizable Appearance
- **Personality:** Refined, Kind, Nature Lover, Brother Complex, Obsessive
- **Engages in:** Elopement
- **Voiced by:** Kasumi Ryou

### Yamada Momoko (山田 ももこ)
Self-proclaimed rival of Erisa, constantly competing with her over everything.

The moment she opens her mouth, she spouts clichéd lines like “I can't hold back my power”—
utterly cliché teenage angst tropes— earning her a reputation (in more ways than one) as a dangerous individual.

[From [url=http://www.ole-m.net/products/manyu/chara/chara.html#yamada]official site[/url]]

- **Gender:** Female
- **Measurements:** Height: 154cm, Bust-Waist-Hips: 98-59-92cm, J cup
- **Birthday:** 25 November
- **Hair:** Blue, Waist Length+, Twin Braids, Sidehair, Tiny Braid
- **Body:** Teen, Slim, Pale, Tanline, Tanned, Big Breasts
- **Clothes:** School Uniform, Ribbon Tie, Crop Top, Pinafore Dress, Sailor School Uniform, Animal Pelt
- **Eyes:** Amber
- **Personality:** Pretending, Chuunibyou, Insightful, Whimsical, Loud
- **Role:** Rival, Vampire, High School Student, Customizable Appearance
- **Voiced by:** Tsuruya Haruto

### Nanase Shii (菜々瀬 椎)
"A sister whose true identity is unknown. A honey trap"

The mysterious sister. Outwardly, a computer programmer. Rumored to be a highly skilled agent in secret.

Possessing the ruthlessness of a professional, yet now fighting with her life to protect her precious brother! Is she enemy or ally?

She is incredibly good at hiding her presence.

- **Gender:** Female
- **Measurements:** Bust-Waist-Hips: 95-58-90cm, G cup
- **Hair:** Blond
- **Body:** Slim, Pale, Young-adult, Tanline, Tanned, Big Breasts
- **Eyes:** Blue
- **Clothes:** Catsuit, Jacket, Wristband, Belt, Bikini, Pareo, Crop Top, Cowboy Hat, Knee-high Boots, High Heeled Boots
- **Personality:** Reserved, Protective, Mysterious, Insightful
- **Role:** Bodyguard, Spy, Coder, Customizable Appearance, School Nurse, Ane Act
- **Voiced by:** Kasumi Ryou

## Shops
- [Official Website](http://www.teck.co.jp/ole/products/manyu/)
- [DLsite](https://www.dlsite.com/pro/work/=/product_id/VJ009465.html)
- [Getchu](http://www.getchu.com/soft.phtml?id=752769)

## Releases
### Japanese
- **2012-11-22**: Mainichi Shabutte Ii Desu ka? ~1-Heya-Manyuu Kazoku~ - [Official website](http://www.teck.co.jp/ole/products/manyu/), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=17596), [Getchu](http://www.getchu.com/soft.phtml?id=752769)
- **2015-08-21**: Mainichi Shabutte Ii Desu ka? ~1-Heya-Manyuu Kazoku~ Download Edition - [Official website](http://www.teck.co.jp/ole/products/manyu/), [DLsite](https://www.dlsite.com/pro/work/=/product_id/VJ009465.html), [Gyutto](https://gyutto.com/i/item151874), [Digiket](https://www.digiket.com/work/show/_data/ID=ITM0119786/), [DL.Getchu](http://dl.getchu.com/i/item1005290), [DMM](https://dlsoft.dmm.co.jp/detail/hobc_0469/)

### English
- **2024-02**: Mainichi Shabutte Ii Desu ka? ~1-Heya-Manyuu Kazoku~ - [Official website](https://sugoivisualnovel.up.railway.app/vns/11327)

## Tags
Sexual Content, ADV, Blood-related Brother/Sister Incest, Comedy, Imouto-type Heroine, Oneesan-type Heroine, Vampire Heroine, Male Protagonist, Family Life Comedy, Relationship Problems, One True End, Protagonist's Childhood Friend as a Heroine, Nameable Protagonist, Vampire Hunter Heroine, Nukige, Map Movement, Twin Sisters as Heroines, Group Sex of One Male and Several Females, Under the Same Roof, Customization, Heroine with Sexual Experience, Adult Heroine, Netori, Blood-related Mother/Son Incest, Tsundere Heroine, Unlockable Harem Ending, Perverted Protagonist, Protagonist's Blood-related Mother as a Heroine, Genre Shift, Vibrators, Defloration, Sex in Public Places, Death of Heroine, Heroine with Swimsuits, Pretending Heroine, Sixty-nine, Super Deformed CGs, Date Display, Erotic Spanking, Cunnilingus, Voyeurism, Doggy Style, Ejaculation Choice, Hairjob, Vampire Protagonist, Infidelity, Outdoor Sex, School Nurse Heroine, Pornography, Naked Sprites, Heroine with Tan Lines, Sex with Sleepers, Anal Toys, Cowgirl, Reverse Cowgirl, Chuunibyou Heroine, Oyakodon Ending, Unlockable Bonus Content, Standing Sex, Sitting Sex, Discreet Sex, Bathroom Sex, Close-up CGs, Twin Boobjob, Sex at School, Gyaru Heroine, Sex on Toilet, Sex on a Beach, Leather Bondage, High School Student Heroine, Sex with Protagonist Only, Heroine with Huge Breasts, Heroine with Big Breasts, Character Profiles, Shimaidon with Twins Ending, More Than Seven Heroines, Skin Color Selection

## More Games from OLE-M
- [Oppai no Ouja 48 ~Nani mo Kangaezu Me no Mae no Oppai Zenbu Shabure!~](https://pinovel.net/v3356)
- [Kono mama ja, Ane to Sex Shite Shimau!? -Are, Otouto yo, Ima Naka de Dasanakatta?-](https://pinovel.net/v2710)
- [Senpai - Oppai - Kako ni Modori Pai ~Ano Hi, Ano Toki, Sex Shiteokeba Yokatta~](https://pinovel.net/v5272)
- [Ore wa Tsuma Killer ~Tsuma 5nin, Musume 5nin, Oyakodon Okawari!~](https://pinovel.net/v8082)
- [Mainichi Shabutte Ii Desu ka? ~1-Heya-Manyuu Kazoku~](https://pinovel.net/v11327)
- [Saimin Class ~Joshi Zen'in, Shiranai Uchi ni Ninshin Shitemashita~](https://pinovel.net/v13901)
- [Saimin Class Wonderful ~Joshi Zen'in, Shiranai Uchi ni Mata Ninshin Shitemashita~](https://pinovel.net/v18734)

---
*View the full details at [pinovel.net/v11327](https://pinovel.net/v11327).*

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