---
title: "Sekai o Seifuku Suru Tame no, 3tsu no Houhou"
description: "It tells the story of a devil king who, in the midst of a battle with a hero, somehow turned himself into a female by taking a secret medicine, which was suppos"
image: "https://t.vndb.org/cv/79/131079.jpg"
---

# Sekai o Seifuku Suru Tame no, 3tsu no Houhou

![Sekai o Seifuku Suru Tame no, 3tsu no Houhou](https://t.vndb.org/cv/79/131079.jpg)

**Alternative Title:** 世界を征服するための、３つの方法

**Aliases:** Three Methods to Conquer the World (subtitle)

**Developer:** CROWD

**Release date:** Mar 27, 2009

**Platform:** Windows, PSP

**Language:** Japanese

**Rating:** 7.1/10 (65 votes)

## Description
It tells the story of a devil king who, in the midst of a battle with a hero, somehow turned himself into a female by taking a secret medicine, which was supposed to give him extraordinary strength!

This sets the stage for a love comedy...

## Characters
### Rusty Ruuan (ラスティ・ルーアン)
Hobbies: Researching new things

- **Gender:** Female
- **Measurements:** Height: 165cm, Weight: 52kg, Bust-Waist-Hips: 83-57-78cm, C cup
- **Hair:** Black, Ahoge, Short, Spiky Bangs, Parted in Middle
- **Body:** Teen, Slim, Pale, Tail, Kemonomimi
- **Engages in:** Fighting, Investigation, Henshin, Wedding, Drugging
- **Eyes:** Red
- **Clothes:** Dress, Wristband, Miniskirt, Jeans, Half-naked, Belt, Wedding Dress, Garter Belt Stockings, Cape, Armband, Flower, Veil, Pleated Skirt, Halterneck Dress, Short Shorts, Rope Bondage Harness
- **Subject of:** Nymphomania, Wounding, Teasing, Being in Heat, Bridal Carry, Sex Change (Male to Female)
- **Role:** Wife, Cousin, Maou
- **Personality:** Short-tempered, Tomboy, Chuunibyou, Brave
- **Voiced by:** Ogura Yui

### Rusty Ruuan (ラスティ・ルーアン)
Liked food: Sweet things
Disliked food: Vegetables and milk among many others
Hobbies: Researching new things
Skills: Performing suspicious experiments

- **Gender:** Male
- **Measurements:** Height: 170cm, Weight: 62kg
- **Hair:** Black, Ahoge, Short, Spiky Bangs, Parted in Middle
- **Body:** Teen, Pale, Muscular
- **Items:** Sword
- **Role:** Hero
- **Engages in:** Fighting, Investigation, Henshin, Drugging
- **Eyes:** Red
- **Clothes:** Jeans, Belt, Armband, Crop Top
- **Personality:** Short-tempered, Sweets Lover, Brave
- **Subject of:** Sex Change (Male to Female)
- **Voiced by:** Healthy Tarou

### Cecilia Lancaster (セシリア・ランカスター)
Likes: [url=/c33922]Rusty[/url], her [url=/c33924]brother[/url], flowers, tea
Dislikes: Loneliness
Hobbies: Taking care of the flowers her brother gave her
Skills: Healing magic

- **Gender:** Female
- **Measurements:** Height: 154cm, Weight: 49kg, Bust-Waist-Hips: 87-60-86cm, E cup
- **Hair:** Blond, Odango, Waist Length+, Straight, Parted in Middle, Sidehair
- **Body:** Teen, Slim, Pale
- **Engages in:** Cooking, Teasing, Wedding
- **Eyes:** Blue
- **Clothes:** Dress, Maid's Dress, Collar, Garter Belt Stockings, Hairpin, Detached Sleeves, Strapless Dress, Veil, Ribbon Hair Tie, Ankle-Strap Shoes
- **Personality:** Friendly, Refined, Kind, Naive, Nature Lover, Watakushi, Brave
- **Role:** Wife, Full Sister, Waitstaff, Younger Sister, Part-time Worker, Healer, Lonely, Ojousama
- **Subject of:** Sex Change (Female to Male)
- **Voiced by:** Kazane

### Fortina (フォルティナ)
Likes: Eating, ice, [url=/c33922]Rusty[/url], granting peoples' wishes
Dislikes: Sleeping alone
Hobbies: Eating
Skills: All kinds of magic

- **Gender:** Female
- **Measurements:** Height: 156cm, Weight: 42kg, Bust-Waist-Hips: 93-55-88cm, F cup
- **Hair:** Violet, Curtained, Short, Spiky Bangs, Parted to Side
- **Body:** Slim, Dark, Kemonomimi, Younger Appearance, Furry Tail, Big Breasts
- **Eyes:** Blue
- **Clothes:** Scarf, Tank Top, Detached Sleeves, Cape, Transparent, Slit Skirt
- **Personality:** Carefree, Food Lover, Energetic, Optimist
- **Engages in:** Teasing, Shapeshifting
- **Role:** Immortal, Genie
- **Subject of:** Sex Change (Female to Male)
- **Voiced by:** Sakurai Alice

### Klaus Lancaster (クラウス・ランカスター)
Likes: [url=/c33921]Rusty[/url]
Dislikes: Scummy people
Hobbies: Playing around with women
Skills: Magic, swordsmanship

- **Gender:** Male
- **Measurements:** Height: 179cm, Weight: 75kg
- **Hair:** Blond, Short, Thick Eyebrows
- **Body:** Slim, Pale, Young-adult
- **Items:** Sword
- **Engages in:** Swordsmanship, Fighting, Teasing, Flirting, Wedding, Bridal Carry
- **Eyes:** Blue
- **Clothes:** Necktie, Shirt
- **Personality:** Deredere, Pervert, Womanizer, Brave, Watashi
- **Role:** Full Brother, Knight, Older Brother, Sexual Dominant
- **Subject of:** Injury, Sex Change (Male to Female)
- **Voiced by:** Kuroki Kai

### Lisa Farushe (リーザ ・ファルシェ)
Likes: Cute things, expensive things, pudding
Dislikes: Dirty things
Hobbies: Shopping, looking at new clothes
Skills: Her eyesight

- **Gender:** Female
- **Measurements:** Height: 166cm, Weight: 56kg, Bust-Waist-Hips: 82-58-85cm, B cup
- **Hair:** Red, Ahoge, Ponytail, Shoulder-length, Sidehair
- **Body:** Teen, Slim, Pale, Kemonomimi, Pointed Ears
- **Clothes:** School Uniform, Dress, Necklace, Arm Warmers, Gloves, Miniskirt, Boots, Gothic, Tank Top, Garter Belt Stockings, Wings, Naked Apron, Pendant Necklace, Hair Tie, Police Officer Uniform, Flat Cap, Pleated Skirt, Choker
- **Role:** Magician, Betrothed, Cousin, Childhood Friend, Sexual Dominant
- **Engages in:** Cooking
- **Eyes:** Amber
- **Personality:** Tsundere, Selfish, Sweets Lover, Old-fashioned, Atashi
- **Subject of:** Kidnapping, Penis Growth, Sex Change (Female to Male)
- **Voiced by:** Tamiyasu Tomoe

### Lukat Matir (ルカート・マティール)
Likes: The Demon King
Dislikes: Cheese
Hobbies: Taking care of the Demon King
Skills: Housework in general (cooking, cleaning and doing laundry)

- **Gender:** Male
- **Measurements:** Height: 181cm, Weight: 82kg
- **Hair:** Blue, Ponytail, Long, Straight, Parted to Side, Sidehair
- **Body:** Teen, Slim, Pale
- **Eyes:** Violet
- **Clothes:** Shirt, Hoodie, Hair Tie
- **Personality:** Friendly, Kind, Smart
- **Role:** Legal Guardian, Servant
- **Engages in:** Teasing, Bridal Carry
- **Subject of:** Sex Change (Male to Female)
- **Voiced by:** Kontsu

## Shops
- [Official Website](http://www.hs-crowd.co.jp/crowd/product/maoh/index.html)
- [DLsite](https://www.dlsite.com/pro/work/=/product_id/VJ004260.html)
- [Getchu](http://www.getchu.com/soft.phtml?id=775177)

## Releases
### Japanese
- **2009-03-27**: Sekai o Seifuku Suru Tame no, 3tsu no Houhou - First Press Limited Edition - [Official website](http://www.hs-crowd.co.jp/crowd/product/maoh/index.html), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=12033), [Getchu](http://www.getchu.com/soft.phtml?id=613045)
- **2009-12-25**: Sekai o Seifuku Suru Tame no, 3tsu no Houhou - Regular Edition - [Official website](http://www.hs-crowd.co.jp/crowd/product/maoh/index.html), [Getchu](http://www.getchu.com/soft.phtml?id=672090)
- **2009-12-25**: Sekai o Seifuku Suru Tame no, 3tsu no Houhou - Download Edition - [Official website](http://www.hs-crowd.co.jp/crowd/product/maoh/index.html), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=12033), [DLsite](https://www.dlsite.com/pro/work/=/product_id/VJ004260.html), [Gyutto](https://gyutto.com/i/item15482), [Digiket](https://www.digiket.com/work/show/_data/ID=ITM0036833/), [DL.Getchu](http://dl.getchu.com/i/item1002018), [DMM](https://dlsoft.dmm.co.jp/detail/ggs_0232/)
- **2010-10-01**: Maou o Seifuku Suru Tame no, 666 no Houhou - Maou-sama Set Edition - [Official website](http://www.hs-crowd.co.jp/crowd/product/maoh666/index.html), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=12687), [Getchu](http://www.getchu.com/soft.phtml?id=684685)
- **2011-03-25**: "Sekai o Seifuku Suru Tame no, 3tsu no Houhou" - UMD-PG Edition - [Official website](http://www.palacegame.cc/detail.php?id=0030)
- **2013-08-30**: CROWD GOLD BOX 2013 - Collector's Edition - [Official website](http://www.hs-crowd.co.jp/crowd/product/c_box2013/cbox2013_top.html), [Getchu](http://www.getchu.com/soft.phtml?id=775177), [DMM](https://www.dmm.co.jp/mono/pcgame/-/detail/=/cid=536crw251/)

## Tags
Fantasy, Sexual Content, ADV, Lesbian Sex, Comedy, Female Protagonist, Protagonist with Voice Acting, Multiple Endings, Tentacle Rape, Immortal Heroine, Western-style Castle, Past Setting in a Fictional World, Group Sex of One Female and Several Males, Sex Change, Floating Textbox, Sex Involving Drugs, Maou Protagonist, Dark Skinned Heroine, Tsundere Heroine, Branching Plot, Protagonist with a Face, Defloration, Anal Penetration, Dark Skinned Characters, Wedding, Protagonist's Childhood Friend as a Hero, Fighting Hero, Immortal Hero, Knight Hero, Avoidable Rape, Impregnation, Protagonist with Ahoge, Multiple Penetration, Cunnilingus, Dark Skinned Hero, Genderbent Sex, Bonus Side Stories, Fingering, Protagonist with a Sprite, Both Male and Female Love Interests, Background Moans, French Kiss

## More Games from CROWD
- [Fukushuu](https://pinovel.net/v6005)
- [Xchange](https://pinovel.net/v43)
- [Kyou * Shi ~Nerawareta Seifuku~](https://pinovel.net/v7604)
- [Tokimeki Check-in!](https://pinovel.net/v111)
- [Xchange2](https://pinovel.net/v128)
- [Doushin ~Sanshimai no Etude~](https://pinovel.net/v122)
- [Fukushuu ~Ryoujoku no Yaiba~](https://pinovel.net/v9810)
- [Brave Soul](https://pinovel.net/v117)
- [miss you](https://pinovel.net/v6195)
- [Obbligato](https://pinovel.net/v10843)
- [Owarinaki Maid-tachi no Yoru](https://pinovel.net/v4364)
- [Xchange3](https://pinovel.net/v129)
- [How to Fudol ~Health Hen~](https://pinovel.net/v3048)
- [Yin-Yang! X Change Alternative](https://pinovel.net/v130)
- [Heisei Nenkin Gekijou: Erodake](https://pinovel.net/v7299)
- [Kunoichiban!](https://pinovel.net/v10021)
- [Sodatete Miryu? ~Boku to Lilith no Chotto Fushigi na Monogatari~](https://pinovel.net/v2656)
- [Fuudol v Ikita~i! ~Hadaka Apron Cabajou Mami~](https://pinovel.net/v9809)
- [X Change Alternative 2 ~Kimi no Hitomi ni Utsuru Kimi~](https://pinovel.net/v817)
- [Sekai o Seifuku Suru Tame no, 3tsu no Houhou](https://pinovel.net/v1492)
- [Maou o Seifuku Suru Tame no, 666 no Houhou](https://pinovel.net/v4506)
- [Futari wa My Angel](https://pinovel.net/v9668)
- [Yin-Yang! X Change EX ~Boku no Sensei ga Konna ni Onna na Wake ga Nai~](https://pinovel.net/v10817)

---
*View the full details at [pinovel.net/v1492](https://pinovel.net/v1492).*

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