---
title: "Gensou no Idea ~Oratorio Phantasm Historia~"
description: "Seven years ago during the great disaster Naglfar Night, a shift in the Earth’s crust caused the land to be inundated by the sea, washing away the soil and dras"
image: "https://t.vndb.org/cv/30/28530.jpg"
---

# Gensou no Idea ~Oratorio Phantasm Historia~

![Gensou no Idea ~Oratorio Phantasm Historia~](https://t.vndb.org/cv/30/28530.jpg)

**Alternative Title:** 幻創のイデア～Oratorio Phantasm Historia～

**Aliases:** 幻创的幻人

**Developer:** 3rdEye

**Release date:** Jun 28, 2013

**Platform:** Windows, iOS, Android

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

**Rating:** 7.7/10 (176 votes)

## Description
Seven years ago during the great disaster Naglfar Night, a shift in the Earth’s crust caused the land to be inundated by the sea, washing away the soil and drastically altering the world. A great tear in the crust known as the ‘parallel out’ emitted noxious gases which hardened the skin of humans, causing them to crumble into dust. This spelled the end of tens of thousands of people.

Those that were not affected moved away from the capital, which was ravaged by the disaster, to rebuild. After some time, they created a cure known as AS9 for those who were affected by the noxious gases. This allowed people to move back to the capital. Yuuma is one of those who now live within in the capital, while Akashi is a mysterious boy who lived in an area abandoned after the disaster. Their fated meeting would bring forth many unfortunate events.

[From [Hau~ Omochikaeri!](https://omochikaeri.wordpress.com/2013/06/20/june-2013-eroge-releases/)]

## Characters
### Akashi (赫)
- **Gender:** Male
- **Alias:** ファイヤドレイク
- **Hair:** Ahoge, Short, Straight, Claret, Parted to Side
- **Clothes:** Trousers, Jacket, Gloves, Boots
- **Personality:** Donkan, Stoic, Nature Lover, Serious, Pragmatic
- **Engages in:** Fighting, Gardening, Bridal Carry
- **Subject of:** Amnesia, Death, Resurrection
- **Eyes:** Green
- **Body:** Young-adult
- **Items:** Handgun
- **Role:** Domestic Partner, Non-human
- **Voiced by:** Munakata Jin

### Minase Yuuma (水瀬 優真)
- **Gender:** Male
- **Hair:** Brown, Short, Spiky, Spiky Bangs
- **Body:** Teen
- **Clothes:** School Uniform, Trousers, Gloves, Sports Shoes, Sleeveless Sweater, Loose Necktie
- **Items:** Sword, Axe, Bow
- **Personality:** Proactive, Hard Worker, Ore, Outgoing, Kind, Optimist, Curious
- **Role:** Orphan, Employee, High School Student, Superhuman, Popular, Older Brother
- **Engages in:** Fighting, Flirting
- **Subject of:** Disaster, Delusion
- **Eyes:** Blue
- **Voiced by:** Hashimoto Yuu

### Kenzaki Noel (剣咲 ノエル)
- **Gender:** Female
- **Hair:** Waist Length+, Straight
- **Body:** Teen, Big Breast Sizes
- **Clothes:** School Uniform, Headband, Gloves, Miniskirt, Thigh-high Boots, Cape, Crop Top
- **Engages in:** Fighting
- **Eyes:** Green
- **Personality:** Secretive, Deredere, Genre Savvy, Short-tempered, Rude, Possessive, Funny, Jealous, Watashi
- **Role:** Domestic Partner, Based on a Fictional Character, High School Student, Non-human
- **Subject of:** Death, Resurrection
- **Items:** Greatsword
- **Voiced by:** Aoba Ringo

### Kokoro (ココロ)
- **Gender:** Female
- **Hair:** Twin Tails, Straight, Cyan, V Bangs, Ankle Length
- **Body:** Teen
- **Eyes:** Amber
- **Personality:** Stoic, Third Person
- **Role:** Homunculus
- **Clothes:** Panties, Baby-doll
- **Voiced by:** Aji Sanma

### Kujou Mitsuki (九條 美月)
- **Gender:** Female
- **Hair:** Blond, Ponytail, Waist Length+, Straight
- **Body:** Teen
- **Clothes:** School Uniform, Dress, Hair Ribbon, Thigh-high Stockings
- **Engages in:** Fighting
- **Eyes:** Blue
- **Personality:** Cynic, Reserved, Low Self-esteem, Classic Tsundere, Distrustful, Refined, Naive
- **Role:** Daughter, Wealthy, High School Student, Superhuman, Lonely
- **Subject of:** Psychological Trauma
- **Voiced by:** Momoi Ichigo

### Nanami Naru (菜々実 なる)
- **Gender:** Female
- **Aliases:** 消閑の綴り師, 虹色の占い師
- **Hair:** Pink, Ponytail, Waist Length+, Braided Headband
- **Body:** Teen
- **Clothes:** School Uniform, Thigh-high Boots, Collar, Strapless Dress
- **Items:** Sword, Tarot Cards
- **Engages in:** Fighting, Revenge
- **Personality:** Deredere, Uneducated, Outgoing, Kind, Possessive, Funny, Strange, Energetic, Vindictive, Optimist, Chuunibyou, Curious, Whimsical, Sharp-tongued
- **Role:** Writer, High School Student, Precog, Non-human, Homeless, Plant
- **Subject of:** Death, Resurrection, Psychological Trauma, Survival
- **Eyes:** Pink
- **Voiced by:** Kimura Ayaka

### Shinomori Rinon (紫護 リノン)
- **Gender:** Female
- **Alias:** RE:NON
- **Hair:** Black, Twin Tails, Long
- **Body:** Teen
- **Engages in:** Fighting
- **Eyes:** Blue, Violet, Heterochromia
- **Clothes:** Miniskirt, Boots, Gothic, Garter Belt Stockings, Sunglasses, Blouse, Hair Tie
- **Subject of:** Split Personality, Death, Resurrection
- **Role:** Idol, Non-human, Popular
- **Personality:** Arrogant, Loyal, Confident, Watashi
- **Voiced by:** Momoi Homi

### Arashiyama (嵐山)
Akashi's "master". Owner of an oden store. He has a pet crow which he names "Keiko", the same name as his ex-wife who divorced him.

- **Gender:** Male
- **Traits:** 
- **Voiced by:** Nishimatsu Kazuhiko

### Egami Zentaro (江神 善太郎)
- **Gender:** Male
- **Hair:** Black, Short
- **Body:** Adult
- **Clothes:** Suit, Hat, Mask, Sunglasses
- **Personality:** Secretive, Relaxed
- **Engages in:** Planning, Investigation
- **Role:** Detective
- **Voiced by:** Hoshi Hitori

### Himawari (ひまわり)
- **Gender:** Female
- **Hair:** Brown, Twin Tails, Long
- **Subject of:** Amnesia
- **Eyes:** Blue
- **Body:** Kid
- **Clothes:** Dress, Hoodie, Hair Flower
- **Personality:** Food Lover, Energetic, Third Person
- **Voiced by:** Himekawa Airi

### Kuon (久遠)
- **Gender:** Male
- **Hair:** Shoulder-length, Straight, Goatee, Grey
- **Eyes:** Green
- **Body:** Old
- **Clothes:** Coat, Suit, Cravat
- **Personality:** Secretive, Relaxed
- **Role:** Principal, Non-human
- **Voiced by:** Koshi Yukimitsu

### Minase Kyouko (水瀬今日子)
- **Gender:** Female
- **Hair:** Blue, Waist Length+
- **Engages in:** Fighting, Sexual Harassment
- **Eyes:** Violet
- **Body:** Young-adult
- **Clothes:** Necktie, Shirt, Half-Skirt, Pantyhose
- **Personality:** Pervert, Relaxed, Strange, Insightful
- **Role:** Legal Guardian, Employer, Non-human
- **Subject of:** Death, Resurrection
- **Voiced by:** Kawashima Rino

### Rouge (ルージュ)
- **Gender:** Female
- **Hair:** Pink, Short, Kemonomimi, Spiky
- **Body:** Teen, Olive
- **Engages in:** Fighting, Genocide
- **Eyes:** Red
- **Clothes:** Evening Gloves, Shorts, Collar, Suspenders
- **Personality:** Carefree, Violent
- **Role:** Non-human
- **Voiced by:** Sakaki Runa

### Tokito (時任)
- **Gender:** Male
- **Hair:** Brown, Ponytail, Long
- **Clothes:** Trousers, Shirt, Vest, Bow Tie
- **Eyes:** Green
- **Body:** Young-adult
- **Personality:** Secretive, Kind
- **Engages in:** Planning, Time Travel
- **Subject of:** Death
- **Role:** Shopkeeper, Non-human
- **Voiced by:** Natsumura Isuke

### Urushibara Reiji (漆原 零二)
- **Gender:** Male
- **Hair:** Blond, Shoulder-length, Straight, Parted in Middle
- **Eyes:** Brown
- **Personality:** Hard Worker, Cynic, Carefree, Womanizer
- **Role:** Villain, Friend, Scientist, Superhuman, Serial Killer
- **Engages in:** Fighting, Suicide, Human Subject Research, Genocide
- **Body:** Young-adult
- **Clothes:** Suit, Cross Necklace
- **Subject of:** Death
- **Voiced by:** Furukawa Tetsuto

### Yui (結衣)
[url=/c17093]Yuuma's[/url] younger sister.

- **Gender:** Female
- **Hair:** Brown, Shoulder-length, Straight, Sidehair
- **Body:** Teen
- **Role:** Orphan, Younger Sister
- **Eyes:** Blue
- **Clothes:** Dress, Headband
- **Personality:** Shy, Watashi
- **Subject of:** Death
- **Voiced by:** Shirotsuki Kaname

## Shops
- [Official Website](http://3rdeye.jp/products/idea/index.html)
- [DLsite](https://www.dlsite.com/pro/work/=/product_id/VJ009993.html)
- [Getchu](http://www.getchu.com/soft.phtml?id=761810)

## Releases
### Japanese
- **2013-04-20**: Gensou no Idea ~Oratorio Phantasm Historia~ Trial Edition - [Official website](http://3rdeye.jp/products/idea/index.html)
- **2013-06-28**: Gensou no Idea ~Oratorio Phantasm Historia~ - [Official website](http://3rdeye.jp/products/idea/index.html), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=18025), [Getchu](http://www.getchu.com/soft.phtml?id=761810)
- **2014-11-14**: Gensou no Idea ~Oratorio Phantasm Historia~ - [Official website](http://moeapp.net/special/idea.html), [App Store](https://apps.apple.com/app/id941018371)
- **2014-11-14**: Gensou no Idea ~Oratorio Phantasm Historia~ - [Official website](http://moeapp.net/special/idea.html), [Google Play](https://play.google.com/store/apps/details?id=net.moeapp.avg.idea_gp)
- **2016-02-19**: Gensou no Idea ~Oratorio Phantasm Historia~ Download Edition - [Official website](http://3rdeye.jp/products/idea/index.html), [DLsite](https://www.dlsite.com/pro/work/=/product_id/VJ009993.html), [Gyutto](https://gyutto.com/i/item164392), [DL.Getchu](http://dl.getchu.com/i/item1005486), [DMM](https://dlsoft.dmm.co.jp/detail/ggs_1033/)

### Chinese (traditional)
- **2016-08-08**: Huanchuang de Huanren - [Official website](https://bbs2.seikuu.com/thread-155557-1-1.html)

## Tags
Superpowers, Action, ADV, Post Apocalyptic Earth, Non-human Heroine, Male Protagonist, Multiple Protagonists, Linear Plot, Multiple Endings, Ojousama Heroine, Classic Tsundere Heroine, Low Sexual Content, Secret Identity, Homunculus Heroine, Heroine with Multiple Personalities, Non-human Protagonist, Heroine with Heterochromia, Protagonist with Psychological Problems, Donkan Protagonist, Episodic Story, Tsundere Heroine, Other Perspectives, Defloration, Protagonist with Partial Voice Acting, Missionary Position, Built-in Walkthrough, High School Student Protagonist, Cowgirl, Chuunibyou Heroine, Varied Title Screens, High School Student Heroine

## More Games from 3rdEye
- [BLOODY†RONDO](https://pinovel.net/v5349)
- [Shinigami no Testament ~Menuet of Epistula~](https://pinovel.net/v7650)
- [Gensou no Idea ~Oratorio Phantasm Historia~](https://pinovel.net/v11881)
- [Sorcery Jokers](https://pinovel.net/v16337)
- [Raillore no Ryakudatsusha](https://pinovel.net/v24752)

---
*View the full details at [pinovel.net/v11881](https://pinovel.net/v11881).*

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