---
title: "Koiimo Sweet ☆ Days"
description: "Yamato looks like a typical guy, but being surrounded by one older sister and two little sisters, he greatly loves his sisters a lot. One day, his older sister "
image: "https://t.vndb.org/cv/32/109132.jpg"
---

# Koiimo Sweet ☆ Days

![Koiimo Sweet ☆ Days](https://t.vndb.org/cv/32/109132.jpg)

**Alternative Title:** 恋妹SWEET☆DAYS

**Aliases:** こいいもSWEET☆DAYS, Koimo

**Developer:** Parasol

**Release date:** May 25, 2012

**Platform:** Windows

**Language:** Japanese

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

## Description
Yamato looks like a typical guy, but being surrounded by one older sister and two little sisters, he greatly loves his sisters a lot. One day, his older sister Azusa informed that he will be transferring to a girl's boarding school as part of a test case for coeducation initiative. He also has to help the school board chairman's daughter Yurika with various duties. Reluctantly he heads to school and waiting there was his little sisters Aoi and Akane who lived apart from him, as well as his childhood friend Ena who’s like family to him. His little sisters shower him with pent-up love, having not seen their older brother for so long.

[From [Hau~ Omochikaeri!](http://omochikaeri.wordpress.com/2012/05/01/may-2012-eroge-releases/)]

## Characters
### Yachiho Yamato (八千穂 大和)
- **Gender:** Male
- **Hair:** Brown
- **Role:** Full Brother, Schoolmate, Classmate, High School Student, Not a Virgin, Younger Brother, Older Brother, Middle Brother
- **Personality:** Sister Complex

### Kyoukain Yurika (響迦院 百合香)
The school chairman's daughter and the student council president.
A proud yet charismatic young lady.

- **Gender:** Female
- **Measurements:** Height: 155cm, Bust-Waist-Hips: 77-57-81cm, C cup
- **Birthday:** 11 June
- **Hair:** Blond, Waist Length+, Wavy, Sidehair
- **Body:** Teen, Slim, Pale
- **Clothes:** School Uniform, Pajamas, Headband, Pantyhose, Maid's Dress, Bikini, Ribbon Hair Accessory
- **Eyes:** Blue
- **Personality:** Carefree, Kind, Watakushi, Charismatic
- **Role:** Student Council President, High School Student, Popular, Ojousama
- **Subject of:** Bridal Carry
- **Voiced by:** Terai Inaho

### Yachiho Akane (八千穂 茜)
Yamato's youngest sister.
A yamato nadeshiko, very modest and timid.

- **Gender:** Female
- **Measurements:** Height: 144cm, Bust-Waist-Hips: 69-50-76cm, AA cup
- **Birthday:** 1 December
- **Hair:** Violet, Shoulder-length, Straight, Blunt Bangs, Braided Headband
- **Body:** Teen, Slim, Pale
- **Clothes:** School Uniform, Kimono, Pajamas, Beret, One Piece Swimsuit, Hairpin, Ribbon Hair Tie
- **Eyes:** Amber, Jitome
- **Personality:** Shy, Timid, Brother Complex, Watashi, Humble
- **Role:** Full Sister, High School Student, Yamato Nadeshiko, Younger Sister
- **Subject of:** Pregnancy
- **Voiced by:** Nogami Nana

### Yachiho Aoi (八千穂 葵)
One of Yamato's younger sisters.
Always cheerful and openhearted, Aoi is a very likeable person.
Openly expresses her love for her older brother.
Can be a little naive at times.

- **Gender:** Female
- **Measurements:** Height: 151cm, Bust-Waist-Hips: 71-51-74cm, A cup
- **Birthday:** 7 July
- **Hair:** White, Waist Length+, Straight, Braid, Spiky Bangs, Twin Braids, Sidehair, Tiny Braid
- **Body:** Teen, Slim, Pale
- **Clothes:** School Uniform, Dress, Necktie, Thigh-high Stockings, Chinese Dress, Beret, One Piece Swimsuit, Hairpin, Rubber Band With Beads, Ribbon Hair Tie
- **Eyes:** Blue, Tareme
- **Personality:** Carefree, Kind, Naive, Brother Complex, Atashi
- **Role:** Full Sister, High School Student, Popular, Younger Sister
- **Voiced by:** Natsuno Koori

### Yamamiya Ena (山宮 恵那)
Yamato's childhood friend.
A rather calm and carefree person.

- **Gender:** Female
- **Measurements:** Height: 157cm, Bust-Waist-Hips: 74-53-76cm, B cup
- **Birthday:** 26 August
- **Hair:** Blond, Curtained, Short, Side Tail, Spiky Bangs, Parted in Middle
- **Body:** Teen, Slim
- **Clothes:** School Uniform, Sweater, Necktie, Knee-high Socks, Bikini, Sports Uniform, Ribbon Hair Tie
- **Eyes:** Blue, Tareme
- **Personality:** Boku, Airhead, Carefree, Friendly, Kind, Docile
- **Role:** Childhood Friend, Schoolmate, Classmate, High School Student
- **Engages in:** Athletics
- **Voiced by:** Matsuda Risa

### Fumonji Kiyori (普門寺 綺依里)
A third-year student and [url=/c12262]Yurika's[/url] cousin who has served her as a maid ever since they were young.

- **Gender:** Female
- **Measurements:** Height: 163cm, Bust-Waist-Hips: 74-48-75cm, B cup
- **Birthday:** 19 October
- **Hair:** Brown, V Bangs
- **Eyes:** Brown
- **Body:** Teen, Slim, Pale
- **Clothes:** School Uniform, Sports Shoes, Knee-high Socks, Maid's Dress, Swimsuit, Mary Jane
- **Personality:** Hard Worker, Loyal, Serious, Watashi
- **Role:** Cousin, Maid, Senpai, High School Student, Honor Student
- **Voiced by:** Aoba Ringo

### Kajikazawa Fujino (鰍沢 藤乃)
The dormitory manager who is kind and like everyone's older sister, but who also gets scary when angered. Used to go to the same school as [url=/c14570]Azusa[/url] and the two are still close friends.

- **Gender:** Female
- **Measurements:** Height: 142cm, Bust-Waist-Hips: 68-46-68cm, AA cup
- **Birthday:** 2 August
- **Hair:** Brown, Curtained, Shoulder-length, Parted to Side
- **Eyes:** Brown
- **Body:** Slim, Pale, Kid, Younger Appearance, Small Breasts
- **Clothes:** Apron, Pajamas, Bikini, One Piece Swimsuit, Flower, Ribbon Hair Accessory, Ballerina Shoes
- **Role:** Friend, Dormitory Manager
- **Personality:** Relaxed, Kind, Watashi
- **Subject of:** Teasing
- **Voiced by:** Oonami Konami

### Kayano Yuuko (茅野 侑子)
[url=/c12260]Aoi's[/url] classmate who is a member of the newspaper club, and despised in the school due to her annoying personality. She is infatuated with [url=/c12263]Ena[/url] whom she calls "onee-sama" and sees Yamato as her biggest rival.

- **Gender:** Female
- **Measurements:** Height: 149cm, Bust-Waist-Hips: 70-48-71cm, A cup
- **Birthday:** 24 June
- **Hair:** Pink, Twin Tails, Shoulder-length, Parted in Middle
- **Body:** Teen, Slim, Pale
- **Clothes:** School Uniform, Shorts, Sports Shoes, Thigh-high Stockings, Hoodie, Bikini, Rubber Band With Beads
- **Eyes:** Violet
- **Personality:** Carefree, Energetic, Mischievous, Atashi, Loud, Obsessive
- **Role:** High School Student, Homosexual, Unpopular, Bisexual, School Newspaper Club Member
- **Items:** Camera
- **Voiced by:** Ogura Yui

### Yachiho Azusa (八千穂 梓)
Yamato, [url=/c12261]Akane[/url] and [url=/c12260]Aoi's[/url] older sister who is a full-time siscon and brocon. She is skilled when it comes to her work and also popular with both students and teachers of the school alike.

- **Gender:** Female
- **Measurements:** Height: 168cm, Bust-Waist-Hips: 87-56-89cm, E cup
- **Birthday:** 11 August
- **Hair:** Violet, Shoulder-length, Parted to Side, Sidehair
- **Body:** Slim, Pale, Young-adult
- **Eyes:** Blue, Tsurime
- **Personality:** Stoic, Sister Complex, Brother Complex, Mischievous, Watashi
- **Engages in:** Drinking
- **Role:** Full Sister, Friend, Not a Virgin, Popular, School Nurse, Older Sister
- **Clothes:** Lab Coat, Bikini, Blouse, Lace Lingerie, Ankle-Strap Shoes
- **Voiced by:** Kawashima Rino

## Shops
- [Official Website](http://www.parasol-soft.com/product/koiimo/download.html)
- [DLsite](https://www.dlsite.com/pro/work/=/product_id/VJ007749.html)

## Releases
### Japanese
- **2012-05-01**: Koiimo SWEET☆DAYS - Trial Edition - [Official website](http://www.parasol-soft.com/product/koiimo/download.html)
- **2012-05-25**: Koiimo SWEET☆DAYS - First Press Edition - [Official website](http://www.parasol-soft.com/product/koiimo/index.html), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=16535)
- **2013-02-08**: Koiimo SWEET☆DAYS - Download Edition - [Official website](http://www.parasol-soft.com/product/koiimo/download.html), [DLsite](https://www.dlsite.com/pro/work/=/product_id/VJ007749.html), [Gyutto](https://gyutto.com/i/item105495), [Digiket](https://www.digiket.com/work/show/_data/ID=ITM0083724/), [DL.Getchu](http://dl.getchu.com/i/item1004351), [DMM](https://dlsoft.dmm.co.jp/detail/russ_0111/)

## Tags
ADV, Yamato Nadeshiko Heroine, Lesbian Sex, Blood-related Sister/Sister Incest, Blood-related Brother/Sister Incest, Maid Heroine, Male Protagonist, Multiple Endings, Early Branching Plot, Ojousama Heroine, Airhead Heroine, Classic Tsundere Heroine, Deredere Heroine, Protagonist's Childhood Friend as a Heroine, High Sexual Content, Group Sex of One Male and Several Females, Early Sexual Content, All-girls School, Heroine with Sexual Experience, Unlockable Harem Ending, Other Perspectives, Nurse Heroine, Protagonist with Sexual Experience, Defloration, Sex in Public Places, Super Deformed CGs, Student Council President Heroine, Twin Blowjob, Heroine with Intake Hairstyle, Intercrural Sex, Arranged Marriage, White Haired Heroine, Dormitory Manager Heroine, Brocon Heroine, Doggy Style, Hairjob, Outdoor Sex, Few Choices, Naked Sprites, Bonus Side Stories, Athlete Heroine, Siscon Protagonist, Heroine with a Braid, Pregnancy Ending, High School Student Heroine, Heroine with Flat Chest (Non-Loli), Nukige, Protagonist's Full Sister as a Heroine, Protagonist's Younger Sister as a Heroine

## More Games from Parasol
- [Magicarat☆Radiant](https://pinovel.net/v3345)
- [Derivara! -Deliverance of Strays-](https://pinovel.net/v5855)
- [Koiimo Sweet ☆ Days](https://pinovel.net/v9095)
- [Yumekoi ~Yume Miru Mahou Shoujo to Koi no Jumon~](https://pinovel.net/v12000)
- [Hare Nochi Kitto Nanohana Biyori](https://pinovel.net/v14886)
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- [Sakura Hitohira Koi Moyou](https://pinovel.net/v20491)
- [Renran Spirichu](https://pinovel.net/v25143)

---
*View the full details at [pinovel.net/v9095](https://pinovel.net/v9095).*

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