---
title: "Boku to Go-nee to Umi no Year!!"
description: "You play as the grandson of an egomaniacal high-rolling real estate agent. Through his business, he has made connections with many a powerful person. He has rec"
image: "https://t.vndb.org/cv/65/71365.jpg"
---

# Boku to Go-nee to Umi no Year!!

![Boku to Go-nee to Umi no Year!!](https://t.vndb.org/cv/65/71365.jpg)

**Alternative Title:** 僕と極姉と海のYear!!

**Aliases:** Boku to 5 Nee to Umi no Year!!, Boku to Goku Nee to Umi no Year!!

**Developer:** Syangrila

**Release date:** Jun 28, 2007

**Platform:** Windows

**Language:** Japanese

**Rating:** 7.0/10 (28 votes)

## Description
You play as the grandson of an egomaniacal high-rolling real estate agent. Through his business, he has made connections with many a powerful person. He has recently taken ill and has sent for you to see him. Gladly leaving your dull private school life for a little bit (summer break), you gladly head over to his estate where you used to spend vacations at. Upon your arrival, your grandfather gives you his final orders: to produce a grandchild for him. This should preferably with be done with one of five daughters of a man with a sizable (and highly desired) piece of land. If you succeed, you will become the president of his company. Your failure will result in your deportation to a life at a US military boot camp. Sounds like you better not screw this up!

[From White Masq]

## Characters
### Ookouchi Riku (大河内 陸)
- **Gender:** Male
- **Hair:** Black, Short
- **Eyes:** Hidden
- **Clothes:** T-shirt, Swimsuit
- **Role:** Grandson

### Nanami Akira (菜波 晶)
The third oldest of the five Nanami sisters

A former member of the US military special forces.

She has taken care of Riku since he was a child, trying to raise him according to her strong sense of justice. How could he possibly agree to this?! She has a tough personality, and she tries to raise Riku to be a man. She usually acts calmly, but her clumsy personality and extremely competitive spirit sometimes lead to failure... *Don't stand behind her!

[Translated from [url=https://www.akabeesoft3.com/products/bokuumi/index.html]Official Site[/url]]

- **Gender:** Female
- **Measurements:** Height: 165cm, Bust-Waist-Hips: 95-56-86cm
- **Hair:** Violet, Bob Cut
- **Clothes:** Keikogi, Necklace, Vest, Jeans, Bikini, Hairpin, Crop Top
- **Engages in:** Martial Arts
- **Personality:** Strict, Clumsy, Stubborn, Competitive
- **Eyes:** Garnet
- **Role:** Older Sister, Veteran
- **Voiced by:** Oonami Konami

### Nanami Kokoro (菜波 こころ)
The fourth oldest of the five Nanami sisters.

While her appearance is unchanged from when she was younger, her personality has completely changed. She used to be a gentle, kind girl who would always smile, but it is a mystery what happened in her past.

She has an aura that keeps other people away, and causes a lot of trouble for Riku, who is in charge of the beach house. For some reason, however, she gets along well with Genji.

[Translated from [url=https://www.akabeesoft3.com/products/bokuumi/index.html]Official Site[/url]]

- **Gender:** Female
- **Measurements:** Height: 180cm, Bust-Waist-Hips: 98-58-88cm
- **Hair:** Ponytail, Long, Green, Sidehair
- **Body:** Slim, Big Breasts, Tall
- **Clothes:** Trousers, Glasses, Chinese Dress, Bikini, Polo Shirt
- **Personality:** Stoic, Mysterious, Quiet
- **Role:** Wife, Younger Sister, Older Sister
- **Subject of:** Pregnancy
- **Eyes:** Garnet
- **Voiced by:** Kasuga An

### Nanami Kyouka (菜波 響香)
The second oldest of the five Nanami sisters.

She's a sexy, cool woman with a straightforward personality.

You wouldn't guess it from her flashy appearance, but she's also a nurse. She's a caring and reliable older sister, but she also has a bad habit of sexually teasing Riku and Mei... She's usually the family leader, but be careful when she's drunk!

[Translated from [url=https://www.akabeesoft3.com/products/bokuumi/index.html]Official Site[/url]]

- **Gender:** Female
- **Measurements:** Height: 168cm, Bust-Waist-Hips: 103-60-90cm
- **Hair:** Red, Ahoge, Long
- **Eyes:** Amber
- **Clothes:** Headband, Necklace, T-shirt, Jeans, Shorts, Bikini, Yukata, Crop Top
- **Personality:** Lazy, Pervert, Kind, Mischievous, Blunt
- **Engages in:** Drinking, Lactation
- **Role:** Not a Virgin, Younger Sister, Older Sister
- **Body:** Big Breasts
- **Voiced by:** Shion Miyabi

### Nanami Mei (菜波 芽生)
The youngest of the five Nanami sisters

She has always been the closest in age to Riku, being one year older than him, so she often sees him as the perfect servant. Perhaps because she grew up surrounded by her older sisters, she hates being treated like a child. At the school she attends, she is in the cheerleading club and has a bodyguard, but there are rumors that this is due to her natural outward power...

[Translated from [url=https://www.akabeesoft3.com/products/bokuumi/index.html]Official Site[/url]

- **Gender:** Female
- **Measurements:** Height: 158cm, Bust-Waist-Hips: 86-56-83cm
- **Hair:** Red, Ahoge, Twin Tails, Long, Curtained
- **Personality:** Hard Worker, Tsundere, Modern Tsundere, Serious
- **Eyes:** Amber
- **Role:** Wife, Domestic Partner, Roommate, Girlfriend, Younger Sister
- **Clothes:** Bikini, Yukata, Sundress, Cheerleading Uniform
- **Body:** Medium Breasts
- **Voiced by:** Chatani Yasura

### Nanami Shiori (菜波 栞)
The eldest of the five Nanami sisters

She's a carefree woman who combines maturity and childishness. She embraces the protagonist with her gentle personality, but most conversations with her don't flow well

She also has a penchant for piercing your heart, so you have to be careful.

She typically scolds Kyouka for her antics.

[Translated from [url=https://www.akabeesoft3.com/products/bokuumi/index.html]Official Site[/url]]

- **Gender:** Female
- **Measurements:** Height: 165cm, Bust-Waist-Hips: 110-62-96cm
- **Hair:** Brown, Ponytail, Long
- **Eyes:** Amber
- **Clothes:** Necklace, T-shirt, Skirt, Sport Bloomers, Thigh-high Stockings, Maid's Dress, Bikini, Towel, Maid's Headdress, Old Type School Swimsuit
- **Personality:** Airhead, Kind, Mature, Immature, Absentminded
- **Role:** Waitstaff, Not a Virgin, Older Sister
- **Body:** Big Breasts
- **Voiced by:** Isshiki Hikaru

### Mizusawa Ryouko (水沢 涼子)
A girl Riku met by chance.

An office lady who frequently buys Genji's takoyaki, always coming with a colleague named Tomoko. But every time she comes, Genji seems to act strange...

She is overall a refreshing and gentle woman.

[Translated from [url=https://www.akabeesoft3.com/products/bokuumi/index.html]Official Site[/url]]

- **Gender:** Female
- **Measurements:** Height: 165cm, Bust-Waist-Hips: 96-58-88cm
- **Hair:** Shoulder-length, Claret
- **Eyes:** Brown
- **Clothes:** Bikini, Hairpin, Sundress
- **Engages in:** Not Sexually Involved
- **Voiced by:** Chatani Yasura

### Ookouchi Juuzou (大河内 十蔵)
Riku's grandfather.

On the surface, he's the president of a massive real estate company, but because he wields significant influence in political and business circles - both domestically and internationally - he's constantly surrounded by shady rumors. Outside of his public image, he's a self-centered, lecherous old man. Everything about him, from his height to his thought process, is unconventional and inexplicable.

[Translated from [url=https://www.akabeesoft3.com/products/bokuumi/index.html]Official Site[/url]]

- **Gender:** Male
- **Measurements:** Height: 80cm
- **Hair:** White, Moustache, Balding
- **Clothes:** Fedora, Suit, Necktie
- **Body:** Old, Short
- **Personality:** Pervert, Arrogant
- **Role:** Grandfather, Wealthy, Famous, Executive

### Yamato Genji (大和 源氏)
A street vendor

A big, intimidating man who suddenly called out to Riku in the park.

He pours an extraordinary amount of love into making takoyaki. He's lived a clumsy life, but he's an old-fashioned man who values loyalty and human feelings. However, he's very opinionated, and he asks Riku to become his younger brother.

[Translated from [url=https://www.akabeesoft3.com/products/bokuumi/index.html]Official Site[/url]]

- **Gender:** Male
- **Measurements:** Height: 195cm
- **Hair:** Black, Short, Beard, Moustache, Slicked Back
- **Clothes:** Sunglasses
- **Voiced by:** Kojirou

## Shops
- [Official Website](http://www.akabeesoft3.com/products/bokuumi/index.html)
- [Getchu](http://www.getchu.com/soft.phtml?id=370506)

## Releases
### Japanese
- **2007-06-28**: Boku to Go-nee to Umi no Year!! - First Press Edition - [Official website](http://www.akabeesoft3.com/products/bokuumi/index.html), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=8811), [Getchu](http://www.getchu.com/soft.phtml?id=370506)
- **2010-10-29**: Boku to Go-nee to Umi no Year!! - Download Edition - [Official website](http://www.akabeesoft3.com/products/bokuumi/index.html), [Gyutto](https://gyutto.com/i/item4938), [DMM](https://dlsoft.dmm.co.jp/detail/akbs_0007/)

## Tags
Sexual Content, ADV, Romance, Comedy, Male Protagonist, Modern Day, Modern Tsundere Heroine, Protagonist's Childhood Friend as a Heroine, High Sexual Content, Heroine with Sexual Experience, Tsundere Heroine, Branching Plot, Defloration, Sex in Public Places, Heroine with Swimsuits, Sixty-nine, Impregnation, Intercrural Sex, Cunnilingus, Romancing a Family, Doggy Style, Female Ejaculation, Outdoor Sex, Title Parody, Cowgirl, Reverse Cowgirl, Standing Sex, Heroine with Big Breasts

## More Games from Syangrila
- [Boku to Go-nee to Umi no Year!!](https://pinovel.net/v517)
- [Akatsuki no Goei](https://pinovel.net/v629)
- [Akatsuki no Goei ~Principal-tachi no Kyuujitsu~](https://pinovel.net/v1307)
- [Akatsuki no Goei ~Tsumibukaki Shuumatsuron~](https://pinovel.net/v3271)

---
*View the full details at [pinovel.net/v517](https://pinovel.net/v517).*

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