---
title: "Koi Doki"
description: "Yuzuru is like any male student: he wants to be popular and do it with a girl. He talks about sex with his classmates and has perverted fantasies when he looks "
image: "https://t.vndb.org/cv/74/20774.jpg"
---

# Koi Doki

![Koi Doki](https://t.vndb.org/cv/74/20774.jpg)

**Alternative Title:** 恋DOKi

**Aliases:** 恋DOKI －コ・イ・ド・キ－

**Developer:** Etoiles

**Release date:** Jun 27, 2014

**Platform:** Windows

**Language:** Japanese

**Rating:** 6.8/10 (21 votes)

## Description
Yuzuru is like any male student: he wants to be popular and do it with a girl. He talks about sex with his classmates and has perverted fantasies when he looks at cute girls. He chooses his wardrobe carefully and reads books about sex and watches AVs to prepare for the moment when it appears. Even though he’s been marked as a troublemaker by the public moral committee’s Suzuka, it’s still an enjoyable school life to him. He doesn’t feel lonely at home while his parents are away overseas since his younger sister Kokoro is always there to greet him with a smile.

One day, he helped a girl who claimed to have come from the future, Miku. She gave him a ring and told him to wear it if he wanted to become popular. Indeed, his life changed upon wearing it, with all girls in the school falling for him, including Suzuka who had considered him as an enemy.

[From [Hau~ Omochikaeri!](http://omochikaeri.wordpress.com/2014/06/11/june-2014-eroge-releases/)]

## Characters
### Kasai Yuzuru (河西 結弦)
- **Gender:** Male
- **Measurements:** Height: 174cm
- **Birthday:** 17 August
- **Hair:** Brown, Short
- **Body:** Teen, Slim, Pale
- **Clothes:** School Uniform, Vest, Ribbon Tie
- **Eyes:** Blue
- **Personality:** Pervert, Sister Complex
- **Role:** Full Brother, Classmate, High School Student, Older Brother

### Hasegawa Mikoto (長谷川 美琴)
- **Gender:** Female
- **Measurements:** Height: 157cm, Bust-Waist-Hips: 89-64-89cm
- **Hair:** Violet, Twin Tails, Shoulder-length, Spiky Bangs, Sidehair
- **Body:** Teen, Slim, Pale, Big Breasts
- **Clothes:** School Uniform, Coat, Dress, Scarf, T-shirt, Thigh-high Stockings, Bandages, Miko's Dress, Crop Top, String Ribbon Tie
- **Engages in:** Cooking, Teasing
- **Eyes:** Violet
- **Personality:** Outgoing, Clumsy, Strange, Religious
- **Role:** Mother, Daughter, Girlfriend, Miko, High School Student
- **Voiced by:** Kotorii Yuuka

### Hinata Chika (日向 知夏)
- **Gender:** Female
- **Aliases:** Chiichan, ちーちゃん, Shimarisu, Tamias, シマリス
- **Measurements:** Height: 150cm, Bust-Waist-Hips: 84-62-86cm
- **Birthday:** 25 November
- **Hair:** Violet, Ahoge, Shoulder-length, Kemonomimi, Spiky Bangs, Parted in Middle, Sidehair
- **Body:** Teen, Slim, Pale, Big Breasts
- **Clothes:** Dress Shoes, Mini-dress, Pantyhose, Hairpin, Clothing with Ribbons, String Ribbon Tie
- **Personality:** Hard Worker, Shy, Kind, Stutter
- **Eyes:** Green
- **Role:** Friend, Kouhai, High School Student
- **Items:** Video Camera, Camera
- **Engages in:** Photography
- **Voiced by:** Aji Sanma

### Kasai Kokoro (河西 心)
- **Gender:** Female
- **Measurements:** Bust-Waist-Hips: 74-59-72cm
- **Hair:** Pink, Ahoge, Waist Length+, Straight, V Bangs, Sidehair
- **Clothes:** School Uniform, Dress, Necktie, Shirt, Miniskirt, Thigh-high Stockings, Tank Top, Naked Apron, Cross Design, Clothing with Ribbons, Knee-high Boots
- **Personality:** Hard Worker, Friendly, Energetic, Brother Complex
- **Engages in:** Cooking, Singing, Cleaning, Cycling
- **Role:** Full Sister, Aunt, Friend, Kouhai, High School Student, Younger Sister
- **Subject of:** Pregnancy
- **Items:** Umbrella, Microphone
- **Eyes:** Tareme, Cyan
- **Body:** Medium Breasts
- **Voiced by:** Yuzuhara Miu

### Miku (みく)
- **Gender:** Female
- **Measurements:** Height: 144cm, Bust-Waist-Hips: 72-58-70cm
- **Hair:** Blond, Ponytail, Long, Straight, V Bangs, Sidehair
- **Body:** Teen, Slim, Pale, Medium Breasts
- **Eyes:** Blue
- **Clothes:** Dress, Miniskirt, Thigh-high Stockings, Hoodie, Cape, Pendant Necklace, Rubber Band With Beads, Tie Pin, Engagement Ring, Breast-Pads, Off-The-Shoulder Shirt, Mary Jane, Naked Shirt
- **Role:** Betrothed, Daughter, Niece, Miko, High School Student, Transfer Student
- **Engages in:** Teasing, Time Travel, Flirting, Flying
- **Personality:** Genius, Mischievous
- **Voiced by:** Hatori Ichi

### Natsui Suzuka (名津井 涼香)
- **Gender:** Female
- **Measurements:** Height: 158cm, Bust-Waist-Hips: 92-65-90cm
- **Hair:** Brown, Waist Length+, Straight, Spiky Bangs, Parted to Side, Twin Braids, Sidehair, Tiny Braid
- **Body:** Teen, Slim, Pale, Big Breasts
- **Clothes:** School Uniform, Dress, Headband, Evening Gloves, Gloves, Thigh-high Stockings, Wedding Dress, Armband, Clothing with Ribbons, Flower, Hair Tie, Ribbon Hair Accessory, Wedding Ring, Crop Top, String Ribbon Tie, Choker, Strapless Panties
- **Eyes:** Violet
- **Role:** Wife, Classmate, High School Student, Honor Student, Discipline Committee Member
- **Personality:** Strict, Serious, Disciplinarian, Watashi
- **Items:** Whip, Pen
- **Engages in:** Wedding
- **Subject of:** Marriage Proposal
- **Voiced by:** Ueda Akane

### Arata Mao (荒田 真央)
- **Gender:** Female
- **Measurements:** Height: 152cm, Bust-Waist-Hips: 81-54-83cm
- **Hair:** Blond, Ahoge, Ponytail, Shoulder-length, Spiky Bangs, Sidehair
- **Clothes:** Thigh-high Stockings, Ribbon Hair Tie, String Ribbon Tie
- **Role:** Schoolmate, Classmate, High School Student
- **Eyes:** Cyan
- **Personality:** Talkative
- **Voiced by:** Harumi Honoka

### Dougami Kanako (堂上 佳菜子)
- **Gender:** Female
- **Measurements:** Height: 162cm, Bust-Waist-Hips: 86-59-87cm
- **Hair:** Blue, Waist Length+, Straight, Spiky Bangs, Sidehair
- **Body:** Teen, Slim, Pale
- **Clothes:** School Uniform, Pantyhose, String Ribbon Tie
- **Eyes:** Green
- **Role:** Schoolmate, High School Student
- **Voiced by:** Hayase Yayoi

### Noritama (のりたま)
- **Gender:** Unknown
- **Hair:** Blond, Short
- **Eyes:** Black, Round
- **Role:** Robot
- **Body:** Tiny, Non-Humanoid

### Tanahashi Daisuke (棚橋 大輔)
- **Gender:** Male
- **Hair:** Black, Short
- **Body:** Teen, Pale
- **Clothes:** School Uniform, Glasses, Shirt, Jeans
- **Eyes:** Hazel
- **Personality:** Otaku, Pervert, Strange
- **Role:** High School Student, School Anime Club Member

## Shops
- [Official Website](http://etoiles-soft.com/products/koidoki/)

## Releases
### Japanese
- **2014-05-14**: Koi Doki - Trial Edition - [Official website](http://etoiles-soft.com/products/koidoki/dl.php)
- **2014-06-27**: Koi Doki - [Official website](http://etoiles-soft.com/products/koidoki/), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=20272)

## Tags
ADV, High School, Genius Heroine, Miko Heroine, Male Protagonist, Shy Heroine, Student Heroine, Student Protagonist, Defloration, Intercrural Sex, Discipline Committee Member Heroine, Brocon Heroine, Siscon Protagonist, Soapy Massage, Sexual Blindfold, Tribadism on Penis, Sexual Cosplay, Pregnancy Good Ending, High School Student Heroine, Heroine with Big Breasts, Protagonist's Full Sister as a Heroine, Protagonist's Younger Sister as a Heroine, Blood-related Brother/Sister Incest, Only Virgin Heroines, Time Travel, Group Sex of One Male and Several Females

## More Games from Etoiles
- [Hime x Hime](https://pinovel.net/v2057)
- [Elle:PrieR ~Shiawase no Kakera o Sagashite~](https://pinovel.net/v3811)
- [Sis Koi](https://pinovel.net/v6996)
- [Colorful☆Cure](https://pinovel.net/v9909)
- [Himitsu no Otome ~Boku ga Onna no Ko ni Natta Wake~](https://pinovel.net/v10931)
- [Mizukano! ~Mizugi no Kanojo to H Shiyo~](https://pinovel.net/v12333)
- [Koi Doki](https://pinovel.net/v14768)
- [Momonoko Sweepers!](https://pinovel.net/v16437)

---
*View the full details at [pinovel.net/v14768](https://pinovel.net/v14768).*

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```