---
title: "Swap A For B ~Onii-chan wa Imouto ni Narisumashi Josou Shite Joshikou e!!~"
description: "Twin brother and sister have been confused since the childhood. Brother suddenly gets directed to a girls school. When he discovers the truth it's too late alre"
image: "https://t.vndb.org/cv/77/37977.jpg"
---

# Swap A For B ~Onii-chan wa Imouto ni Narisumashi Josou Shite Joshikou e!!~

![Swap A For B ~Onii-chan wa Imouto ni Narisumashi Josou Shite Joshikou e!!~](https://t.vndb.org/cv/77/37977.jpg)

**Alternative Title:** すわっぷAふぉ～B ～お兄ちゃんは妹になりすまし女装して女子校へ!!～

**Aliases:** すわっぷ A ふぉー B

**Developer:** Optim

**Release date:** Jan 26, 2001

**Platform:** Windows, Android

**Language:** Japanese

**Rating:** 6.0/10 (avg, 1 votes)

## Description
Twin brother and sister have been confused since the childhood. Brother suddenly gets directed to a girls school. When he discovers the truth it's too late already - it's time to have fun.

[From [vndbreview](https://vndbreview.blogspot.com/2019/02/vn-of-month-january-2001.html)]

## Characters
### Yamanaka Kazuya (山中 和哉)
- **Gender:** Male
- **Measurements:** Height: 160cm
- **Birthday:** 23 October
- **Hair:** Brown, Short, Wig, Spiky Bangs
- **Engages in:** Cross-dressing, Athletics, Polyamory, Impersonation
- **Body:** Teen, Slim, Pale
- **Eyes:** Amber
- **Clothes:** Sport Bloomers, Boots, Sailor School Uniform, Swim Brief
- **Personality:** Hetare, Ore, Clumsy, Docile, Watashi
- **Role:** Twin Brother, Boyfriend, Girlfriend, High School Student, Not a Virgin, Bisexual
- **Subject of:** Teasing, Seduction, Sexual Orientation Discovery

### Abe Taeko (阿倍 多恵子)
- **Gender:** Female
- **Measurements:** Height: 168cm
- **Birthday:** 25 June
- **Hair:** Black, Bun, Long, Straight, Spiky Bangs
- **Body:** Slim, Pale, Young-adult, Makeup, Big Breasts
- **Eyes:** Amber, Hosome
- **Clothes:** Glasses, Necktie, Necklace, Skirt, Pantyhose, Belt, Court Shoes, Ring, Strap-on Dildo, Blouse, Bracelet, Hair Tie, Microskirt, Latex Thigh-high Boots
- **Personality:** Strict, Short-tempered, Serious, Watashi, Closet Pervert
- **Role:** Not a Virgin, Bisexual, Sexual Dominant, Infamous, Homeroom Teacher
- **Items:** Pen
- **Voiced by:** Haruno Moe

### Kami Honoka (加美 穂乃香)
- **Gender:** Female
- **Measurements:** Height: 163cm
- **Birthday:** 9 May
- **Hair:** Blond, Long, Wavy, Spiky Bangs, Parted to Side
- **Body:** Slim, Pale, Young-adult, Nail Polish, Makeup, Big Breasts
- **Eyes:** Violet
- **Clothes:** Miniskirt, Sport Bloomers, Lab Coat, Court Shoes, Tank Top, Bikini, Strap-on Dildo, Bracelet, Name Tag, Thong Panties, High Heeled Shoes
- **Personality:** Pervert, Carefree, Confident, Watashi
- **Role:** Girlfriend, Not a Virgin, School Nurse, Bisexual
- **Engages in:** Teasing, Seduction, Polyamory
- **Voiced by:** Shinruu Karin

### Katagiri Yuuki (片桐 優希)
- **Gender:** Female
- **Measurements:** Height: 156cm
- **Birthday:** 17 April
- **Hair:** Brown, Long, Braid, Spiky Bangs, Parted in Middle
- **Body:** Teen, Slim, Pale, Big Breasts
- **Subject of:** Assault, Bullying
- **Eyes:** Blue, Tareme
- **Clothes:** Glasses, Skirt, Sport Bloomers, Tank Top, Ribbon Hair Tie, Sports Swimsuit, Sundress, Sailor School Uniform, Knee-high Boots
- **Personality:** Reserved, Timid, Flustered, Watashi
- **Role:** Girlfriend, Class President, High School Student, Honor Student
- **Engages in:** Polyamory
- **Voiced by:** Tanaka Michi

### Makino Nanami (槙野 七海)
- **Gender:** Female
- **Measurements:** Height: 158cm
- **Birthday:** 1 July
- **Hair:** Blue, Wavy, Shoulder-length, Intake, V Bangs, Sidehair
- **Body:** Teen, Slim, Pale, Big Breasts
- **Eyes:** Red
- **Clothes:** Jacket, Miniskirt, Sport Bloomers, Belt, Armband, Bracelet, Tube Top, Ribbon Hair Tie, Sports Swimsuit, Sailor School Uniform, Platform Shoes, Loose Socks, Turtleneck Crop Top
- **Personality:** Outgoing, Relaxed, Mischievous, Atashi
- **Role:** Girlfriend, Friend, High School Student, Not a Virgin
- **Engages in:** Teasing, Sarcasm, Athletics, Polyamory
- **Subject of:** Teasing
- **Voiced by:** Motohimiko

### Sakakibara Kaho (榊原 夏帆)
- **Gender:** Female
- **Measurements:** Height: 160cm
- **Birthday:** 8 August
- **Hair:** Short, Green, Spiky Bangs, Sidehair
- **Body:** Teen, Slim, Pale, Big Breasts
- **Eyes:** Green
- **Clothes:** Sport Bloomers, Sports Shoes, Tank Top, Bikini, One Piece Swimsuit, Swim Cap, Pareo, Sports Swimsuit, Sailor School Uniform, Short Shorts
- **Personality:** Ore, Relaxed, Tomboy, Masculine Speech
- **Role:** Girlfriend, High School Student, School Swimming Club Member
- **Engages in:** Swimming, Polyamory
- **Voiced by:** Sakura Reona

### Shibata Akari (芝田 あかり)
- **Gender:** Female
- **Measurements:** Height: 150cm
- **Birthday:** 15 February
- **Hair:** Red, Twin Tails, Waist Length+, Ringlet, Sidehair
- **Body:** Teen, Slim, Pale, Small Breasts
- **Clothes:** Mini-dress, Sport Bloomers, Boots, Tank Top, Hair Tie, Ribbon Hair Tie, Sports Swimsuit, Shrug, Sailor School Uniform
- **Personality:** Deredere, Possessive, Energetic, Assertive, Third Person, Cheerful
- **Role:** Girlfriend, Student Club Member, Kouhai, High School Student, Homosexual, Bisexual, Sister Act
- **Subject of:** Teasing, Sexual Orientation Discovery
- **Engages in:** Athletics, Polyamory
- **Eyes:** Pink, Tareme
- **Voiced by:** Motchi

### Takasagi Misae (高鷺 美冴)
- **Gender:** Female
- **Measurements:** Height: 158cm
- **Birthday:** 12 October
- **Hair:** Violet, Waist Length+, Ringlet, Spiky Bangs, Parted to Side
- **Body:** Teen, Slim, Pale, Big Breasts
- **Eyes:** Red, Tsurime
- **Clothes:** Earrings, Evening Gloves, Sport Bloomers, Thigh-high Stockings, Bracelet, Strapless Dress, Sports Swimsuit, Tiara, Choker, Sailor School Uniform, High Heeled Boots, Sleeveless Dress, High Heeled Shoes
- **Engages in:** Bullying, Assault, Suicide Attempt, Polyamory, Suicide Ideation
- **Role:** Girlfriend, High School Student, School Drama Club Member, Ojousama
- **Personality:** Arrogant, Refined, Watakushi, Envious, Sharp-tongued
- **Subject of:** Teasing
- **Voiced by:** Moriyama Aoi

### Tennouji Marin (天王寺 真鈴)
- **Gender:** Female
- **Measurements:** Height: 155cm
- **Birthday:** 24 December
- **Hair:** Black, Bob Cut, Intake, Parted in Middle
- **Body:** Teen, Slim, Pale, Medium Breasts
- **Engages in:** Cooking, Teasing, Athletics, Seduction, Polyamory
- **Eyes:** Violet, Tareme
- **Clothes:** Apron, Mini-dress, Miniskirt, Sport Bloomers, Tank Top, Sports Swimsuit, Sailor School Uniform, Loafers
- **Personality:** Carefree, Clumsy, Absentminded, Atashi, Whimsical
- **Role:** Girlfriend, High School Student, School Science Club Member
- **Voiced by:** Suzumori Chisato

### Yamanaka Kazumi (山中 和美)
- **Gender:** Female
- **Measurements:** Height: 160cm
- **Birthday:** 23 October
- **Hair:** Brown, Short, Spiky Bangs
- **Body:** Teen, Slim, Pale, Big Breasts
- **Eyes:** Amber
- **Clothes:** Miniskirt, Tank Top, Sailor School Uniform, Platform Shoes
- **Personality:** Carefree, Outgoing, Watashi
- **Role:** Twin Sister, Girlfriend, Friend, High School Student, Popular, School "Go Home Club" Member
- **Engages in:** Not Sexually Involved, Skipping School
- **Subject of:** Impersonation
- **Voiced by:** Miru

## Shops
- [Official Website](http://drops-market.com/products/detail652.html)
- [DLsite](https://www.dlsite.com/pro/work/=/product_id/VJ001393.html)
- [Getchu](http://www.getchu.com/soft.phtml?id=98981)

## Releases
### Japanese
- **2001-01-26**: Swap A For B ~Onii-chan wa Imouto ni Narisumashi Josou Shite Joshikou e!!~ - [Official website](http://web.archive.org/web/20010712150833/http://optim.jp/swap.asp), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=376), [Getchu](http://www.getchu.com/soft.phtml?id=2469)
- **2004-09-24**: Anniversary ★ Ippai no Kansha o Komete - [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=4089), [Getchu](http://www.getchu.com/soft.phtml?id=98981)
- **2006-02-24**: Swap A For B - Download Edition - [DLsite](https://www.dlsite.com/pro/work/=/product_id/VJ001393.html), [Gyutto](https://gyutto.com/i/item46387), [Digiket](https://www.digiket.com/work/show/_data/ID=ITM0005313/), [DL.Getchu](http://dl.getchu.com/i/item1002746), [DMM](https://dlsoft.dmm.co.jp/detail/vsat_0004/)
- **2012-10-02**: Swap A For B ~Onii-chan wa Imouto ni Narisumashi Josou Shite Joshikou e!!~ - [Official website](http://drops-market.com/products/detail652.html), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=17777)

## Tags
Sexual Content, ADV, Romance, Heroine with Glasses, Student Heroine, Twin Tail Heroine, Heroine with Intake Hairstyle, Trap Protagonist, Ojousama Heroine, Tomboy Heroine, Choices with 4 or More Options, Protagonist with a Face, Read Text Marking, All-girls School, Multiple Endings, Male Protagonist, Crossdressing Protagonist as a Secret, Date Display, Teacher Heroine, School Nurse Heroine, Harem Ending, More Than Seven Heroines, Naked Sprites, Location Display, Protagonist as the Only Male, Pegging, Anal Fingering

## More Games from Optim
- [Ganrou ~Omoi no Mama ni~](https://pinovel.net/v11353)
- [Costume](https://pinovel.net/v11352)
- [Swap A For B ~Onii-chan wa Imouto ni Narisumashi Josou Shite Joshikou e!!~](https://pinovel.net/v10343)
- [Hina ~Ippai Daisuki~](https://pinovel.net/v11354)
- [Dark Ages -Asa no Konai Basho-](https://pinovel.net/v9753)
- [Amaori no Ningyou-hime ~Tozasareta Tobira, Mesu Ningyou no Shikyuu~](https://pinovel.net/v6102)
- [Rosarium ~Tsunagareta Shounen~](https://pinovel.net/v3528)

---
*View the full details at [pinovel.net/v10343](https://pinovel.net/v10343).*

```json
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```