---
title: "Ookii Koto wa H na Koto Da! - Koushinchou Onee-san-tachi to Bukkake Harem Seikatsu"
description: "The protagonist, Kogawa Daisuke, gets invited by his brother to freeload at the place where his distant relatives, the Takamine Family, live. It's a residence r"
image: "https://t.vndb.org/cv/82/110182.jpg"
---

# Ookii Koto wa H na Koto Da! - Koushinchou Onee-san-tachi to Bukkake Harem Seikatsu

![Ookii Koto wa H na Koto Da! - Koushinchou Onee-san-tachi to Bukkake Harem Seikatsu](https://t.vndb.org/cv/82/110182.jpg)

**Alternative Title:** 大きいことはHなことだ！ 高身長お姉さんたちとぶっかけハーレム性活

**Developer:** Atelier Kaguya

**Release date:** Nov 26, 2021

**Platform:** Windows

**Language:** Japanese

**Rating:** 6.6/10 (39 votes)

## Description
The protagonist, Kogawa Daisuke, gets invited by his brother to freeload at the place where his distant relatives, the Takamine Family, live. It's a residence resembling a millionaire's mansion where maids take care of the household chores and the food is nothing but magnificent.

He was suspicious of the ordeal, but still went with the request.

However, as he arrived, three sisters with equally huge breasts, asses and backs were awaiting him:

- Hina, the eldest sister with a natural disposition of being a busty slut.
- Fuuka, the younger sister with a laid-back and bountiful attitude.
- Minori, the third sister who's friendly and just a tiny bit of a fatso.

What awaits him are not carefree days full of studying, but actually a Bukkake harem life with the three massive Takamine sisters!

## Characters
### Ogawa Daisuke (小川 代助)
- **Gender:** Male
- **Body:** Teen
- **Role:** Betrothed, Domestic Partner, Roommate, Boyfriend, Part-time Worker, Relative
- **Engages in:** Polyamory

### Takamine Fuuka (高峰 風迦)
Second daughter of the Takamine family.
She is a laid-back NEET.
She is good at drawing and handicrafts.
She sometimes works as a manga assistant to earn some extra money.
Her hobbies are exercising and coffee tasting.

"I see... So, will you be friends with me?"

- **Gender:** Female
- **Hair:** Blue, Shoulder-length, Eye Covering, Shaggy
- **Body:** Pale, Young-adult, Muscular, Inverted Nipples, Gigantic Breasts
- **Eyes:** Blue
- **Personality:** Pervert, Relaxed
- **Role:** Full Sister, Domestic Partner, Girlfriend, NEET, Not a Virgin, Middle Sister
- **Clothes:** Belt, Pendant Necklace, Micro Mini Shorts, Tied-up shirt
- **Engages in:** Seduction, Polyamory
- **Voiced by:** Yatsuhashi Kinako

### Takamine Hina (高峰 毘奈)
The eldest daughter of the Takamine family.
She works as a freelance video editor.
She is the more sensible of the sisters, but is easily swayed by her desires.
She has a casual attitude toward her younger sisters, but acts like a big sister to the main character.

"I want a fresh young cock!"

- **Gender:** Female
- **Hair:** Waist Length+, Straight, Orange
- **Eyes:** Blue
- **Body:** Muscular, Nail Polish, Huge Breasts
- **Clothes:** Earrings
- **Personality:** Pervert
- **Role:** Betrothed, Full Sister, Domestic Partner, Not a Virgin, Older Sister
- **Subject of:** Pregnancy
- **Engages in:** Seduction, Lactation, Polyamory
- **Voiced by:** Misonoo Mei

### Takamine Minori (高峰 弥野里)
The third daughter of the Takamine family.
She is a college student who's high spirited and a bit of an otaku.
She hopes to become close friends with the protagonist.
She is a casual hedonist and loves to talk.
Her hobbies cover all subcultures.

"Nyahaha! That's hella dope♪!"

- **Gender:** Female
- **Hair:** Pink, Violet, Twin Tails, Gradient Colored Hair
- **Eyes:** Blue
- **Body:** Overweight, Gigantic Breasts
- **Clothes:** Glasses
- **Personality:** Otaku, Pervert, Energetic, Talkative
- **Role:** Betrothed, Full Sister, Domestic Partner, Girlfriend, Not a Virgin, Younger Sister
- **Engages in:** Seduction, Lactation, Polyamory
- **Voiced by:** Arigatou

## Shops
- [Official Website](http://www.kaguya-m.com/products_kaguya/kyojyo/index.html)
- [Getchu](http://www.getchu.com/soft.phtml?id=1149814)

## Releases
### Japanese
- **2021-11-08**: Ookii Koto wa H na Koto Da! - Koushinchou Onee-san-tachi to Bukkake Harem Seikatsu Trial Edition
- **2021-11-26**: Ookii Koto wa H na Koto Da! - Koushinchou Onee-san-tachi to Bukkake Harem Seikatsu - Package Edition - [Official website](http://www.kaguya-m.com/products_kaguya/kyojyo/index.html), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=31615), [Getchu](http://www.getchu.com/soft.phtml?id=1149814)
- **2021-11-26**: Ookii Koto wa H na Koto Da! - Koushinchou Onee-san-tachi to Bukkake Harem Seikatsu - Download Edition - [Official website](http://www.kaguya-m.com/products_kaguya/kyojyo/index.html), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=31615), [DMM](https://dlsoft.dmm.co.jp/detail/cveaa_0082/)

## Tags
ADV, Male Protagonist, Multiple Endings, Otaku Heroine, Nukige, Group Sex of One Male and Several Females, Pregnancy, Pregnant Sex, Harem Ending, Heroine with Sexual Experience, Female Domination, Summer, Chubby Heroine, Missionary Position, Sixty-nine, Lactation During Sex, Cunnilingus, Doggy Style, Outdoor Sex, Excessive Semen, Cowgirl, Reverse Cowgirl, Standing Sex, Sitting Sex, Spoons, Bathroom Sex, Background Moans, Twin Boobjob, Reverse Missionary, Quickie Fix Position, Tall Heroine, Perverted Heroine, Heroine with Inverted Nipples, Twin Handjob, Big Ass Heroine, Adult Breast Sucking, Muscular Heroine, Threesome, Rope Bondage, Only Non-Virgin Heroines, Single Boobjob, Single Handjob, Single Blowjob, Anal Sex, Sex Involving Food, Sex with Protagonist Only, Heroine with Huge Breasts, Heroine with Gigantic Breasts

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- [Ookii Koto wa H na Koto Da! - Koushinchou Onee-san-tachi to Bukkake Harem Seikatsu](https://pinovel.net/v32295)

---
*View the full details at [pinovel.net/v32295](https://pinovel.net/v32295).*

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