---
title: "Naisho no Natsuyasumi"
description: "Father remarries, and main character gets a cute little sister. On a summer vacation day older brother gets lost to temptation and attacks his new sister.  [Fro"
image: "https://t.vndb.org/cv/20/41120.jpg"
---

# Naisho no Natsuyasumi

![Naisho no Natsuyasumi](https://t.vndb.org/cv/20/41120.jpg)

**Alternative Title:** ナイショの夏休み

**Developer:** Kaerinokai2

**Release date:** Dec 2, 2007

**Platform:** Windows

**Language:** English, Japanese, Russian

**Rating:** 5.3/10 (37 votes)

## Description
Father remarries, and main character gets a cute little sister. On a summer vacation day older brother gets lost to temptation and attacks his new sister.

[From [vndbreview](https://vndbreview.blogspot.com/2020/06/vn-of-month-december-2007-dies-irae.html)]

## Characters
### Takafumi
- **Gender:** Male
- **Hair:** Blond, Short, Straight, Spiky Bangs
- **Body:** Slim, Pale, Young-adult
- **Role:** Student, Non-blood-related Brother, Non-blood-related Son, Older Brother
- **Eyes:** Violet
- **Clothes:** T-shirt
- **Subject of:** Blackmail
- **Items:** Laptop

### Miho (美穂)
- **Gender:** Female
- **Hair:** Brown, Twin Tails, Curtained, Spiky Bangs, Short Bangs, Sidehair
- **Body:** Slim, Pale, Kid
- **Eyes:** Violet
- **Clothes:** Miniskirt, Tank Top, Panties, Rubber Band With Beads
- **Role:** Daughter, Friend, Non-blood-related Sister, Bisexual, Younger Sister
- **Engages in:** Blackmail, Photography
- **Items:** Mobile Phone

### Shouko (翔子)
- **Gender:** Female
- **Hair:** Violet, Shoulder-length, Spiky, No Bangs, Sidehair
- **Body:** Slim, Pale, Kid
- **Eyes:** Red
- **Role:** Friend, Bisexual
- **Clothes:** Hairpin, Shimapan, Sundress

### Mama (ママ)
- **Gender:** Female
- **Hair:** Blond
- **Body:** Slim, Pale, Young-adult
- **Eyes:** Violet
- **Clothes:** T-shirt, Shorts
- **Role:** Wife, Mother, Non-blood-related Mother
- **Items:** Handbag
- **Engages in:** Not Sexually Involved

## Shops
- [Official Website](https://web.archive.org/web/20140906082911/http://www.usamimi.info/~wakabakaoru/wiki/index.php?%A5%CA%A5%A4%A5%B7%A5%E7%A4%CE%B2%C6%B5%D9%A4%DF)
- [DLsite](https://www.dlsite.com/maniax/work/=/product_id/RJ035854.html)

## Releases
### Japanese
- **2007-12-02**: Naisho no Natsuyasumi - Download Edition - [Official website](https://web.archive.org/web/20140906082911/http://www.usamimi.info/~wakabakaoru/wiki/index.php?%A5%CA%A5%A4%A5%B7%A5%E7%A4%CE%B2%C6%B5%D9%A4%DF), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=10404), [DLsite](https://www.dlsite.com/maniax/work/=/product_id/RJ035854.html), [Digiket](https://www.digiket.com/work/show/_data/ID=ITM0015410/), [DMM](https://www.dmm.co.jp/dc/doujin/-/detail/=/cid=d_029042/)
- **2008-02-08**: Naisho no Natsuyasumi - Package Edition - [Official website](https://web.archive.org/web/20140906082911/http://www.usamimi.info/~wakabakaoru/wiki/index.php?%A5%CA%A5%A4%A5%B7%A5%E7%A4%CE%B2%C6%B5%D9%A4%DF), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=10404)

### English
- **2019-12-31**: Secret summer vacation - [Official website](https://ulmf.org/threads/rj035854-secret-summer-vacation-naishono-mi.13636/)

### Russian
- **2024-03-27**: Kaerinokai2 complete - [Official website](https://pornolab.net/forum/viewtopic.php?t=3071889)

## Tags
Male Protagonist, Lolicon, Group Sex of One Male and Several Females, Defloration, Only Virgin Heroines, Tribadism, Voyeurism, Only Loli Heroines, Bisexual Heroine, Sex Involving Children, Lesbian Lolicon, Straight Lolicon, Summer, Protagonist's Non-blood-related Sister as a Heroine, Protagonist's Younger Sister as a Heroine, Non-blood-related Brother/Sister Incest

## More Games from Kaerinokai2
- [Naisho no Natsuyasumi](https://pinovel.net/v27516)
- [relation](https://pinovel.net/v16426)
- [Yuka](https://pinovel.net/v16427)
- [Doripure!](https://pinovel.net/v16428)
- [Miu](https://pinovel.net/v16429)
- [sousyun](https://pinovel.net/v16430)
- [Ambivalence](https://pinovel.net/v35939)
- [Koyori ~SEVENDAYS~](https://pinovel.net/v16431)
- [Mai no Tsubomi](https://pinovel.net/v16432)
- [Rina no Chiisana Oka](https://pinovel.net/v21727)
- [Mayuri no Himitsu](https://pinovel.net/v31698)
- [Akane no Chiisana Hanabira](https://pinovel.net/v32995)
- [Nakayoshi Rezu](https://pinovel.net/v32998)
- [Kekkon Shitai Otoshigoro](https://pinovel.net/v31699)
- [Akari-chan no Otona no Obenkyou!](https://pinovel.net/v35930)
- [Tsubomi no Hokorobi](https://pinovel.net/v49422)

---
*View the full details at [pinovel.net/v27516](https://pinovel.net/v27516).*

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```