---
title: "Touma Kojirou no Tantei File ~Opera Za no Kaijin Satsujin Jiken~"
description: "Touma Kojirou was just a regular, ordinary detective, investigating suspicions of adultery and finding lost pets until one day, his little sister brings her fri"
image: "https://t.vndb.org/cv/50/129550.jpg"
---

# Touma Kojirou no Tantei File ~Opera Za no Kaijin Satsujin Jiken~

![Touma Kojirou no Tantei File ~Opera Za no Kaijin Satsujin Jiken~](https://t.vndb.org/cv/50/129550.jpg)

**Alternative Title:** 冬馬小次郎の探偵FILE ～オペラ座の怪人殺人事件～

**Developer:** Softhouse-Seal

**Release date:** May 25, 2012

**Platform:** Windows, Linux, macOS

**Language:** English, Japanese, Portuguese (Brazil)

**Rating:** 5.7/10 (337 votes)

## Description
Touma Kojirou was just a regular, ordinary detective, investigating suspicions of adultery and finding lost pets until one day, his little sister brings her friend in as a client. As her theater troupe prepares for their performance of “Phantom of the Opera”, a real phantom threatens to end their production!

Will you be able to uncover the identity of this masked assailant before its too late?! Or will you be too busy banging every member of the cast?! Find out, when the curtain rises!

[From [MangaGamer](http://blog.mangagamer.org/2013/06/01/touma-kojirous-detective-file/)]

## Characters
### Touma Kojirou (冬馬小次郎)
- **Gender:** Male
- **Alias:** Kou-chan
- **Hair:** Black, Short
- **Body:** Pale, Young-adult
- **Engages in:** Drinking, Sexual Harassment
- **Role:** Childhood Friend, Non-blood-related Brother, Detective, Older Brother

### Minase Kaori (水瀬香織)
Eldest daughter of the Minase family and Tomoe’s elder sister. 

An actress who is always wearing revealing clothes and acting sexy. Unlike her little sister, Tomoe, she has a rough and selfish personality. 

Her acting isn’t terribly impressive, but her voluptuous body entrances men. 

She is playing the role of Christine in ”The Phantom of the Opera.”

[From [url=http://www.mangagamer.com/detail.php?goods_type=1&product_code=71]MangaGamer[/url]]

Voiced by Ooba Jun.

- **Gender:** Female
- **Measurements:** Bust-Waist-Hips: 100-57-94cm
- **Hair:** Brown, Long, V Bangs, Sidehair
- **Body:** Slim, Pale, Young-adult, Big Breasts
- **Eyes:** Green
- **Clothes:** Skirt, Belt, Collar, Garter Belt Stockings, Bracelet, Crop Top
- **Personality:** Arrogant
- **Role:** Not a Virgin, Actor, Older Sister
- **Subject of:** Homicide
- **Voiced by:** Ooba Jun

### Minase Tomoe (水瀬巴)
One of Reina’s juniors. 

A first year student in the St. Shirayuki Women’s Academy’s Theater Club. She is quite the rich girl, being the daughter of a theater owner. Having a quiet personality and lacking self confidence, she finds herself taking a passive role in events. Her acting abilities are quite impressive.

[From [url=http://www.mangagamer.com/detail.php?goods_type=1&product_code=71]MangaGamer[/url]]

Voiced by Harukawa Akari.

- **Gender:** Female
- **Measurements:** Bust-Waist-Hips: 83-52-84cm
- **Hair:** Black, Bob Cut, Short, Straight, Spiky Bangs
- **Body:** Teen, Slim, Pale, Medium Breasts
- **Eyes:** Violet
- **Clothes:** Dress, Pantyhose, Clothing with Ribbons, Choker
- **Personality:** Shy
- **Role:** Kouhai, High School Student, Younger Sister, Ojousama
- **Subject of:** Grief
- **Voiced by:** Harukawa Akari

### Nanase Ako (七瀬亜子)
A member of the theater troupe. 

She always smiles, has a gentle personality, and treats everyone kindly, but is strong-willed, and when she reaches a decision, she will stubbornly see it through to the end. 

She has a habit of disappearing before rehearsals and performances, but none of the troupe members know where she goes. She is a woman of much mystery.

[From [url=http://www.mangagamer.com/detail.php?goods_type=1&product_code=71]MangaGamer[/url]]

Voiced by Iino Shiori.

- **Gender:** Female
- **Measurements:** Bust-Waist-Hips: 86-54-85cm
- **Hair:** Violet, Waist Length+, Curtained, Straight, Spiky Bangs, Sidehair
- **Body:** Slim, Pale, Young-adult, Big Breasts
- **Role:** Villain, Actor, Older Sister
- **Eyes:** Blue
- **Clothes:** Pantyhose, Ribbon Hair Tie, Skirt Suit
- **Engages in:** Drinking, Murder, Revenge, Lactation, Suicide Attempt
- **Voiced by:** Iino Shiori

### Natsukise Youko (夏木瀬陽子)
Kojirou’s scatterbrained childhood friend and assistant. 

The uplifting half of the Touma Detective Agency. But, being scatterbrained and a bit soft in the head, Kojirou’s always picking on her. 

Furthermore, she takes everything at face value, making her an easy mark for door-to-door salesmen and such. Kojirou often gets mad at her, and usually gropes her voluptuous breasts as punishment. 

Perhaps because of simple nature, she gets along well with children.

[From [url=http://www.mangagamer.com/detail.php?goods_type=1&product_code=71]MangaGamer[/url]]

Voiced by Katakura Hina.

- **Gender:** Female
- **Measurements:** Bust-Waist-Hips: 94-59-92cm
- **Hair:** Brown, Waist Length+, Straight, V Bangs, Sidehair
- **Body:** Teen, Slim, Pale, Big Breasts
- **Clothes:** School Uniform, Thigh-high Stockings, Loafers
- **Eyes:** Blue
- **Personality:** Airhead, Clumsy, Watashi
- **Role:** Childhood Friend
- **Subject of:** Sexual Harassment
- **Voiced by:** Katakura Hina

### Touma Reina (冬馬澪奈)
Kojirou’s little sister. 

Attends St. Shirayuki Women’s 
Unlike her brother, Reina’s grades are superb and her conduct irreproachable. Her quiet demeanor is cool and intellectual, having an almost unapproachable feeling to it. She is very popular with her juniors, being called the ”Blue Princess” by the other students. 

However, when she is alone with Kojirou, she quietly lets him dote on her. On her way back from school, she always pops into visit him before going home. Unbeknownst to her brother, she thinks of Youko as a rival for his affections. 

Because she always sees the protagonist groping Youko’s breasts, she has a complex about her small chest.

[From [url=http://www.mangagamer.com/detail.php?goods_type=1&product_code=71]MangaGamer[/url]]

Voiced by Konoe Yuzuko.

- **Gender:** Female
- **Measurements:** Bust-Waist-Hips: 77-55-84cm
- **Hair:** Brown, Short, Parted to Side
- **Eyes:** Brown
- **Body:** Teen, Slim, Pale, Medium Breasts
- **Clothes:** School Uniform, Loafers
- **Role:** Non-blood-related Sister, Senpai, High School Student, Younger Sister
- **Personality:** Serious
- **Subject of:** Piggyback Ride
- **Voiced by:** Konoe Yuzuko

### Hayami Yuuichi (早見祐一)
A freelance reporter. 

Always walks around with a camera so he won’t miss his next scoop. Interested in gossip, the economy, and just about everything else. 

Is a joker, but also rather forceful and quickly makes friends with people he’s just met. 

Makes fast friends with Kojirou while the pair size up the women around them. 

[From [url=http://www.mangagamer.com/detail.php?goods_type=1&product_code=71]MangaGamer[/url]]

- **Gender:** Male
- **Hair:** Black, Short, Shaggy
- **Eyes:** Brown
- **Body:** Pale, Young-adult
- **Clothes:** Trousers, Shirt, Belt
- **Role:** Journalist
- **Items:** Camera
- **Subject of:** Homicide

### Sanjou Naoya (三条直也)
A narcissistic actor. Currently playing the role of Raoul in "The Phantom of the Opera."

- **Gender:** Male
- **Hair:** Blond, Short, Parted to Side
- **Body:** Pale, Young-adult
- **Clothes:** Trousers, T-shirt, Belt, Dog Tags, Sunglasses
- **Eyes:** Blue
- **Personality:** Narcissist
- **Role:** Actor
- **Subject of:** Homicide

### Sendou Tetsuya (千堂達也)
A member of the theater troupe. 

Used by Sanjou as an errand boy. 

Friendly, but timid, and unable to say what he wants. 
Finds himself incapable of refusing anything Sanjou and Kaori order him to do. 

Tells Kojirou and the others various things. He is one of the more normal members in the troupe.

[From [url=http://www.mangagamer.com/detail.php?goods_type=1&product_code=71]MangaGamer[/url]]

- **Gender:** Male
- **Hair:** Black, Short, Parted to Side
- **Body:** Pale, Young-adult
- **Eyes:** Blue
- **Clothes:** Shirt, Jeans
- **Personality:** Shy

### Tawarada Ittetsu (俵田一徹)
An investigator from the First Section of the Criminal Investigation Department of Police HQ. 

Has a much stronger sense of justice and ethics than most people, carrying a conviction to forgive no evil. 

Rather stubborn, and feared as the ”Demon Investigator” within the department, but actually has a gentle personality and is considerate of his underlings, who place great trust in him. 
Is a 3rd Dan black belt in Judo and confident in his strength. 

Due to the protagonist’s inability to act serious and fool around, not to mention the way he pokes about while an investigation is in progress, Tawarada views him as a nuisance. They get along like cats and dogs.

[From [url=http://www.mangagamer.com/detail.php?goods_type=1&product_code=71]MangaGamer[/url]]

- **Gender:** Male
- **Hair:** Brown, Short, Sideburns
- **Eyes:** Brown
- **Body:** Pale, Young-adult
- **Clothes:** Suit, Necktie
- **Role:** Police, Detective

## Shops
- [Official Website](http://softhouse-seal.com/product/061-tanteifile/index.html)
- [DLsite](https://www.dlsite.com/maniax/work/=/product_id/RJ095785.html)
- [Getchu](http://www.getchu.com/soft.phtml?id=1010942)

## Releases
### Japanese
- **2012-05-25**: Touma Kojirou no Tantei File ~Opera Za no Kaijin Satsujin Jiken~ Package Edition - [Official website](https://web.archive.org/web/20231018185224/https://softhouse-seal.com/product/061-tanteifile/index.html), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=17028), [Getchu](http://www.getchu.com/soft.phtml?id=740262)
- **2012-05-25**: Touma Kojirou no Tantei File ~Opera Za no Kaijin Satsujin Jiken~ Download Edition - [Official website](http://softhouse-seal.com/product/061-tanteifile/index.html), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=17028), [DLsite](https://www.dlsite.com/maniax/work/=/product_id/RJ095785.html), [Gyutto](https://gyutto.com/i/item83119), [Gyutto](https://gyutto.com/i/item83159), [Digiket](https://www.digiket.com/work/show/_data/ID=ITM0067029/), [DL.Getchu](http://dl.getchu.com/i/item17529), [DMM](https://dlsoft.dmm.co.jp/detail/high_0067/), [DMM](https://www.dmm.co.jp/dc/doujin/-/detail/=/cid=d_048364/)
- **2014-01-17**: softhouse-seal Pack Vol.2 - [Official website](http://softhouse-seal.softstore.jp/i/item115771), [Gyutto](https://gyutto.com/i/item115771)
- **2015-12-25**: softhouse-seal Nukige 100-pon Ultimate Pack - Deluxe Edition - [Official website](http://softhouse-seal.com/product/100pon-set/index.html), [Getchu](http://www.getchu.com/soft.phtml?id=876808), [DMM](https://www.dmm.co.jp/mono/pcgame/-/detail/=/cid=1471sea139/)
- **2015-12-25**: softhouse-seal Doon! to 100-pon Set - [DMM](https://dlsoft.dmm.co.jp/detail/high_0138pack/)
- **2015-12-25**: softhouse-seal Nukige 100-pon Ultimate Pack - Compact Edition - [Official website](http://softhouse-seal.com/product/100pon-set/index.html), [Getchu](http://www.getchu.com/soft.phtml?id=876807)
- **2018-07-27**: softhouse-seal Nukige 100-pon Ultimate Pack - Outlet Edition - [Official website](http://softhouse-seal.com/product/100pon-set/index.html), [Getchu](http://www.getchu.com/soft.phtml?id=1010942)

### English
- **2013-11-28**: Touma Kojirou's Detective File -Murder at the Opera House- - [MangaGamer](https://www.mangagamer.com/r18/detail.php?product_code=71)
- **2016-05-06**: Touma Kojirou's Detective File -Murder at the Opera House- - [MangaGamer](https://www.mangagamer.com/r18/detail.php?product_code=71)

### Portuguese (Brazil)
- **2019**: Touma Kojirou's Detective File - [Official website](https://erogesptbr.com/touma-kojirous-detective-file-pt-br-eromanga/)

## Tags
Sexual Content, ADV, Lesbian Sex, Sister/Sister Incest, Non-blood-related Brother/Sister Incest, Imouto-type Heroine, Male Protagonist, Adult Protagonist, Multiple Endings, Murder Mystery, Ojousama Heroine, Airhead Heroine, Protagonist's Childhood Friend as a Heroine, Nukige, Protagonist's Non-blood-related Sister as a Heroine, High Sexual Content, Group Sex of One Male and Several Females, Student Heroine, Early Sexual Content, Heroine with Sexual Experience, Adult Heroine, Private Detective Protagonist, Arrogant Heroine, Proactive Protagonist, Clumsy Heroine, Defloration, Hotel, Missionary Position, Promiscuous Heroine, Theater, Lactation During Sex, Cunnilingus, Doggy Style, Homicide, Ejaculation Choice, Colored Name-tags, Threesome Ending, Anal Toys, Cowgirl, Promiscuity, Sitting Sex, Drunk Sex, Close-up CGs, Threesome, Single Boobjob, Single Blowjob, Vaginal Masturbation, High School Student Heroine, Protagonist's Younger Sister as a Heroine, Heroine with Big Breasts

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---
*View the full details at [pinovel.net/v10362](https://pinovel.net/v10362).*

```json
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```