---
title: "Natsuiro Kokoro Log"
description: "One day, Yoshito was challenged by his senpai Kisara to a match in a fighting game. Even though he was confident in his skills, she was a top ranker and beat hi"
image: "https://t.vndb.org/cv/00/93300.jpg"
---

# Natsuiro Kokoro Log

![Natsuiro Kokoro Log](https://t.vndb.org/cv/00/93300.jpg)

**Alternative Title:** ナツイロココロログ

**Aliases:** Rorolog, ロロログ

**Developer:** Hearts

**Release date:** May 27, 2016

**Platform:** Windows, PS Vita

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

**Rating:** 7.4/10 (149 votes)

## Description
One day, Yoshito was challenged by his senpai Kisara to a match in a fighting game. Even though he was confident in his skills, she was a top ranker and beat him handily. As a result, he had to join the cyber-research club that she was the leader of. It was a relatively new club, but it soon became lively with the addition of his osananajimi and student council deputy leader Kuon, his dependable imouto Rin and classmate Kotone.

At the start of summer vacation, Yoshito was asked by the club’s advisor Kanae to help test out a love simulation game that’s in development. However, all the female avatars in the game were played by the girls in the cyber-research club! Once it was revealed that his avatar had an AI which mimicked his personality, they interacted with him in ways that they normally wouldn’t in real life. Traversing the line between reality and imagination, he could see the true feelings of the heroines who are not honest with their feelings. Their summer love story begins now.

[From [Hau~ Omochikaeri!](https://omochikaeri.wordpress.com/2016/05/01/may-2016-eroge-releases/)]

## Characters
### Ominae Yoshito (臣苗 嘉人)
A second year at Ashinomiya Academy.

- **Gender:** Male
- **Measurements:** Height: 180cm
- **Hair:** Brown, Short, Straight
- **Eyes:** Brown, Hosome
- **Body:** Teen, Slim, Pale
- **Clothes:** School Uniform, Trousers, Necktie, Shirt, T-shirt, Vest, Swim Shorts, Loafers, Polo Shirt
- **Personality:** Ore, Pervert, Friendly, Kind, Smart, Honest
- **Role:** Husband, Full Brother, Boyfriend, Childhood Friend, Senpai, Kouhai, Gamer, Older Brother, School PC Club Member, Eleventh Grader
- **Engages in:** Unarmed Fighting, Competition, Wedding, Bridal Carry

### Kisara (キサラ)
Kisara's virtual avatar.

- **Gender:** Female
- **Aliases:** Nagi, ナギ
- **Hair:** White, Ponytail, Waist Length+, Straight, Intake, V Bangs, Sidehair, Tiny Braid
- **Body:** Teen, Slim, Pale, Big Breasts
- **Role:** Warrior, Maid, Famous, Virtual Avatar
- **Engages in:** Fighting, Martial Arts, Unarmed Fighting, Competition, Flying
- **Clothes:** Dress, Cross Necklace, Gloves, Thigh-high Stockings, Maid's Dress, Bikini, Hairpin, Clothing with Ribbons, Ribbon Hair Accessory, Mary Jane, Short Shorts, Ribbon Headband
- **Personality:** Deredere, Tomboy, Naive, Honest, Assertive, Competitive
- **Eyes:** Garnet
- **Voiced by:** Kawashima Rino

### Kuon (クオン)
Kuon's virtual avatar.

- **Gender:** Female
- **Hair:** Red, Ahoge, Odango, Waist Length+, Kemonomimi, Intake
- **Body:** Teen, Slim, Pale, Fang, Big Breasts
- **Eyes:** Violet
- **Clothes:** Dress, Mini-dress, Half-Skirt, Bikini, Crown, Ankle Bracelet, Ribbon Tie, Body Ribbon, Clothing with Ribbons, Ribbon Hair Tie, Garter, Unusual Hair Ornaments, Puffy Sleeves, Tiara, Choker, Thigh Band, Ankle-Strap Shoes, Ball Gown
- **Personality:** Refined, Watakushi, Flustered
- **Engages in:** Flying
- **Role:** Virtual Avatar
- **Voiced by:** Yomogi Kasumi

### Lie (ライ)
A famous idol in the digital world, and the digital avatar of Kotone.
[spoiler]She appears to be a (close to) independent personality inside Kotone, created from her low self-esteem.They are shown to communicate via a small hand mirror Kotone carries around with herself.[/spoiler]

- **Gender:** Female
- **Measurements:** Height: 154cm
- **Hair:** Blond, Ahoge, Straight, Side Tail, V Bangs, Spiky Bangs, Asymmetrical Sidehair
- **Body:** Teen, Slim, Pale, Big Breasts
- **Eyes:** Blue, Violet, Heterochromia
- **Clothes:** Wristband, Skirt, Miniskirt, Thigh-high Stockings, Collar, Bikini, Garter Belt Stockings, Hairpin, Clothing with Ribbons, Unusual Hair Ornaments, Mary Jane
- **Personality:** Deredere, Energetic, Assertive, Third Person
- **Role:** Popular, Famous, Net Idol, Virtual Avatar
- **Engages in:** Flying
- **Voiced by:** Yahiro Mami

### Nagi Kisara (名城 綺新)
A 3rd year at the school, and leader of the computer club. She semi-forces Yoshito into the club via an online competition. For obvious reasons, she is loved in the martial arts clubs for fighting in her school uniform, which she visits regularly to hone her skills.

- **Gender:** Female
- **Measurements:** Height: 160cm
- **Birthday:** 24 March
- **Hair:** Black, Waist Length+, Straight, Intake, V Bangs, Spiky Bangs, Sidehair, Tiny Braid
- **Body:** Teen, Slim, Pale, Big Breasts
- **Clothes:** School Uniform, Headband, Cross Necklace, Gloves, Wedding Dress, Bikini, Garter Belt Stockings, Hairpin, Yukata, Clothing with Ribbons, Ribbon Hair Accessory, Bridal Gauntlet, Choker, Off-The-Shoulder Shirt, Sailor School Uniform
- **Personality:** Airhead, Tomboy, Naive, Competitive, Watashi
- **Engages in:** Martial Arts, Computering, Wedding
- **Role:** Senpai, Gamer, School PC Club President, Twelfth Grader
- **Eyes:** Garnet
- **Voiced by:** Kawashima Rino

### Nanakuni Kotone (七国 小都音)
The shy kouhai of Yoshito, and Rin's classmate. Loves gardening and also took a liking to worms and slugs.

Her digital avatar is the famous idol "Lie".

- **Gender:** Female
- **Measurements:** Height: 148cm
- **Birthday:** 10 June
- **Hair:** Blue, Ahoge, Long, Shoulder-length, Straight, Cyan, V Bangs, Spiky Bangs, Sidehair
- **Body:** Teen, Slim, Pale, Medium Breasts
- **Eyes:** Blue, Violet, Heterochromia
- **Clothes:** Miniskirt, Shawl, Tank Top, Bikini, Hairpin, Yukata, Body Ribbon, Clothing with Ribbons, Sailor School Uniform, Short Shorts, Ribbon Headband, Sleeveless Dress
- **Personality:** Shy, Low Self-esteem, Kind, Nature Lover, Watashi
- **Subject of:** Split Personality, Fainting
- **Role:** Childhood Friend, Classmate, Kouhai, School PC Club Member, Tenth Grader
- **Engages in:** Computering
- **Voiced by:** Yahiro Mami

### Ominae Rin (臣苗 鈴)
Yoshito's sister, who is a closet Brocon. She became that way to be a reliable sister, but her digital avatar shows her true self, one  that still wants to be spoiled. Also a classmate & friend of Kotone.

- **Gender:** Female
- **Measurements:** Height: 150cm
- **Birthday:** 3 December
- **Hair:** Brown, Long, Straight, Side Tail, V Bangs, Spiky Bangs, Asymmetrical Sidehair, Half Updo
- **Eyes:** Brown
- **Body:** Teen, Slim, Pale, Left Handed, Medium Breasts
- **Personality:** Hard Worker, Friendly, Kind, Brother Complex, Third Person, Watashi, Cheerful
- **Engages in:** Cooking, Cleaning
- **Clothes:** Apron, Dress, Beret, Bikini, Bell (accessory), Hairpin, Hair Flower, Yukata, Ribbon Tie, Body Ribbon, Clothing with Ribbons, Hair Tie, Over The Knee Socks, Sailor School Uniform, Thigh Band, Sailor Suit
- **Role:** Full Sister, Classmate, Kouhai, Younger Sister, School PC Club Member, Secret Girlfriend, Tenth Grader
- **Voiced by:** Kano Manaka

### Rin (リン)
Rin's virtual avatar.

- **Gender:** Female
- **Hair:** Pink, Twin Tails, Long, Straight, V Bangs, Spiky Bangs, Asymmetrical Sidehair, Half Updo
- **Body:** Teen, Slim, Pale, Tail, Kemonomimi, Medium Breasts
- **Clothes:** Mini-dress, Thigh-high Stockings, Bell (accessory), Nurse Uniform, Garter Belt Stockings, Hairpin, Hair Flower, Wings, Ribbon Tie, Cross Design, Ribbon Hair Tie, Nurse's Cap, Bikini Skirt
- **Personality:** Spoiled, Friendly, Kind, Brother Complex, Third Person, Cheerful
- **Role:** Full Sister, Rabbit, Younger Sister, Healer, Virtual Avatar
- **Eyes:** Pink
- **Voiced by:** Kano Manaka

### Tokiwa Kuon (常磐 久遠)
Childhoodfriend of Yoshito and Rin, as well as the Vice President of the Student Council. Not having seen each other for quite some time, she uses the club under the cover of "supervision" to spend more time with him again.

- **Gender:** Female
- **Measurements:** Height: 156cm
- **Birthday:** 24 August
- **Hair:** Red, Ahoge, Odango, Twin Tails, Waist Length+, Straight, Intake
- **Body:** Teen, Slim, Pale, Big Breasts
- **Clothes:** School Uniform, Mini-dress, Necklace, Thigh-high Stockings, Wedding Dress, Bikini, Pendant Necklace, Yukata, Ribbon Hair Tie, Bridal Gauntlet, Sailor School Uniform
- **Personality:** Hard Worker, Pretending, Outgoing, Refined, Watashi
- **Eyes:** Violet
- **Role:** Childhood Friend, Senpai, Kouhai, Gamer, Half-Japanese, Popular, School PC Club Member, Student Council Vice President, Ojousama, Eleventh Grader
- **Engages in:** Computering, Wedding
- **Subject of:** Bridal Carry
- **Voiced by:** Yomogi Kasumi

### Umemiya Kanae (梅宮 香奈恵)
- **Gender:** Female
- **Measurements:** Height: 154cm
- **Hair:** Black, Antenna, Short, Straight, Intake, Blunt Bangs
- **Body:** Teen, Slim, Pale, Big Breasts
- **Eyes:** Green
- **Clothes:** Glasses, Necktie, Shirt, Vest, Miniskirt, Bikini, Hairpin, Skirt Suit, Pareo, Over The Knee Socks, Slit Skirt
- **Personality:** Lazy, Carefree, Confident, Watashi, Sloppy
- **Role:** Full Sister, Teacher, Gamer, Coder, Older Sister, Student Club Advisor, Homeroom Teacher
- **Voiced by:** Tachibana Mao

### Eu-kun (エウ君)
Umemiya siblings' support mecha mascot. Its official name is "Electronic World Connection Device" - shortened as EWCD.

- **Gender:** Unknown
- **Alias:** EW-kun
- **Measurements:** Height: 30cm
- **Personality:** Spoiled, Outgoing, Third Person
- **Role:** Artificial Intelligence, Robot, Mascot Character
- **Body:** Tiny, Non-Humanoid
- **Eyes:** Round
- **Engages in:** Flying
- **Voiced by:** Yuina

### Nagi Toshiya (名城 敏也)
- **Gender:** Male
- **Hair:** Short, Grey, Parted to Side
- **Clothes:** Fedora, Coat, Necktie
- **Role:** Father
- **Eyes:** Garnet

### Tokiwa Yoshiomi (常磐 義臣)
- **Gender:** Male
- **Hair:** Black, Short, Beard, Moustache, Slicked Back
- **Eyes:** Violet
- **Clothes:** Suit, Necktie, Vest, Pocket Square
- **Role:** Father

### Umemiya Shiina (梅宮 椎菜)
- **Gender:** Male
- **Measurements:** Height: 155cm
- **Hair:** White, Shoulder-length, Straight
- **Body:** Teen, Slim, Pale
- **Clothes:** School Uniform, Shirt, Hoodie, Swim Shorts, Ribbon Tie
- **Eyes:** Green, Jitome
- **Personality:** Boku, Friendly, Smart, Desu, Opposite Gender Voiced, Obsessive
- **Role:** Full Brother, Classmate, Kouhai, Mechanic, Younger Brother, School PC Club Member, Tenth Grader
- **Engages in:** Computering
- **Subject of:** Forced Cross-dressing
- **Voiced by:** Tsuruya Haruto

## Shops
- [Official Website](http://www.dramaticcreate.com/rorolog/)

## Releases
### Japanese
- **2016-01-29**: Natsuiro Kokoro Log - Impression Trial - [Official website](https://hearts.amusecraft.com/rorolog/special/impression.html)
- **2016-04-22**: Natsuiro Kokoro Log - Trial Edition - [Official website](https://hearts.amusecraft.com/rorolog/download.html)
- **2016-05-27**: Natsuiro Kokoro Log - [Official website](https://hearts.amusecraft.com/rorolog/index.html), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=22847)
- **2017-07-07**: Natsuiro Kokoro Log - Download Edition - [Official website](https://hearts.amusecraft.com/rorolog/index.html), [DMM](https://dlsoft.dmm.co.jp/detail/spal_0120/)
- **2018-04-26**: Natsuiro Kokoro Log - Package Edition - [Official website](http://www.dramaticcreate.com/rorolog/), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=26287), [PlayAsia](https://www.play-asia.com/13/70bsvn)
- **2018-04-26**: Natsuiro Kokoro Log -  Download Edition - [Official website](http://www.dramaticcreate.com/rorolog/), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=26287)

### Chinese (simplified)
- **2025-10-26**: Xiase Xintiao Rizhi - [Official website](https://rorolog.popipa.org/)

## Tags
Sexual Content, ADV, Blood-related Brother/Sister Incest, Brother/Sister Romance, Science Fiction, Protagonist's Senpai as a Heroine, Male Protagonist, Teacher Heroine, Heroine with Glasses, Protagonist's Childhood Friend as a Heroine, Protagonist's Sister as a Heroine, Protagonist's Blood-related Sister as a Heroine, Low Sexual Content, Group Sex of One Male and Several Females, Virtual Reality, Heroine with Zettai Ryouiki, Student Club, Tomboy Heroine, Martial Artist Heroine, Protagonist's Kouhai as a Heroine, Other Perspectives, Urination Fetish, Defloration, Student Club President Heroine, Gamer Protagonist, Half-Japanese Heroine, Student Council Member Heroine, Student Club Member Heroine, Brocon Heroine, Heroine with a Fang, Cowgirl, Sex in Water, Gamer Heroine, Combat Sport, Bathroom Sex, Heroine with Garter Belt, Background Moans, Gaming, High School Student Heroine, Heroine with Big Breasts, Heroine with Multiple Personalities, Only Virgin Heroines, Protagonist's Younger Sister as a Heroine, Protagonist's Full Sister as a Heroine, Quickie Fix Position, Perverted Heroine, Heroine with Heterochromia

## More Games from Hearts
- [Mercuria ~Mizu no Miyako ni Koi no Hanataba o~](https://pinovel.net/v2630)
- [Koi Saku Miyako ni Ai no Yakusoku o ~Annaffiare~](https://pinovel.net/v12309)
- [Natsuiro Kokoro Log](https://pinovel.net/v18670)
- [Natsuiro Kokoro Log ~Happy Summer~](https://pinovel.net/v20261)
- [Koi Suru Kokoro to Mahou no Kotoba](https://pinovel.net/v22152)

---
*View the full details at [pinovel.net/v18670](https://pinovel.net/v18670).*

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