---
title: "Mizen Tantei: The Protea Cases"
description: "Shinjuku, 2023.  The protagonist, Chiharu Izuki, lacks self-confidence due to the trauma of once being kidnapped, and spend her days unable to help anyone at al"
image: "https://t.vndb.org/cv/39/85239.jpg"
---

# Mizen Tantei: The Protea Cases

![Mizen Tantei: The Protea Cases](https://t.vndb.org/cv/39/85239.jpg)

**Alternative Title:** 未然探偵 The Protea Cases

**Developer:** orange inc.

**Release date:** Jul 28, 2022

**Platform:** Windows, iOS, Android, PS4, Switch

**Language:** Japanese

**Rating:** 6.5/10 (avg, 2 votes)

## Description
Shinjuku, 2023.

The protagonist, Chiharu Izuki, lacks self-confidence due to the trauma of once being kidnapped, and spend her days unable to help anyone at all.

One day, while searching for a missing person at her detective agency job, she comes cross the mysterious app “Protea.”

It was a crime prediction artificial intelligence developed by the Metropolitan Police Department and currently being tested in the Shinjuku Ward.

Guided by Protea’s predictions, Chihari encounters various incidents.

She meets a detective who asks for her cooperation, a mysterious boy who for some reason appears at the scene of the crime, and others.

Chiharu’s new life of cooperative work to prevent incidents before they occur has begun…!

[from [Gematsu](https://www.gematsu.com/2022/07/romantic-mystery-visual-novel-mizen-tantei-the-protea-cases-announced-for-ps4-switch-pc-ios-and-android)]

## Characters
### Izuki Chiharu (伊月 千春)
- **Gender:** Female
- **Clothes:** Glasses
- **Role:** Detective
- **Engages in:** Investigation
- **Subject of:** Kidnapping
- **Personality:** Smart

### ？？？
- **Gender:** Male
- **Aliases:** 八神 冬真, Yagami Touma
- **Role:** Hacker, University Student
- **Hair:** Braid
- **Clothes:** Hoodie, Pendant Necklace

### Amano Natsuki (天野 夏樹)
- **Gender:** Male
- **Hair:** Brown, Spiky
- **Clothes:** Necktie, Blazer
- **Role:** Police, Younger Brother
- **Subject of:** Confinement

### Takase Akihiko (高瀬 秋彦)
- **Gender:** Male
- **Hair:** Black, Slicked Back
- **Clothes:** Necktie, Watch, Blazer, Pocket Square
- **Role:** Detective
- **Engages in:** Investigation, Stalking

### Houjou Yoshito (北条 ヨシト)
- **Gender:** Male
- **Role:** Husband, Executive
- **Clothes:** Wedding Ring

### Inoue (井上)
- **Gender:** Male
- **Role:** Police

### Kai Tomonori (甲斐 智則)
- **Gender:** Male
- **Traits:** 

### Kaori (カオリ)
- **Gender:** Female
- **Aliases:** 岡野 歌織, Okano Kaori
- **Clothes:** Suit, Surgical Mask
- **Subject of:** Blackmail
- **Role:** High School Student, Con Artist

### Katagiri Ritsuko (片桐 律子)
- **Gender:** Female
- **Role:** Friend, Police
- **Clothes:** Police Officer Uniform

### Keihou (慧蜂)
- **Gender:** Female
- **Role:** Fortune Teller

### Kuroishi Shougo (黒石 正吾)
- **Gender:** Male
- **Aliases:** マサさん, Masa-san
- **Role:** Yakuza
- **Engages in:** Murder, Kidnapping, Attempted Murder, Confinement

### Master (マスター)
- **Gender:** Male
- **Role:** Shopkeeper, Bartender, Informant

### Narita (成田)
- **Gender:** Male
- **Role:** Gang Member

### Ogata Kyouhei (尾形 恭平)
- **Gender:** Male
- **Engages in:** Murder
- **Role:** University Teacher

### Sasakawa Jou (佐々川 丈)
- **Gender:** Male
- **Engages in:** Assault
- **Subject of:** Arrest

### Souma Kazuya (相馬 和也)
- **Gender:** Male
- **Engages in:** Murder
- **Role:** Executive, Older Brother

### Yoshino Mei (吉野 芽衣)
- **Gender:** Female
- **Role:** Younger Sister

### Yoshino Yui (吉野 由依)
- **Gender:** Female
- **Role:** Coder, Older Sister
- **Subject of:** Disappearance

### Amano Haruki (天野 春樹)
- **Gender:** Male
- **Role:** Police, Older Brother
- **Personality:** Genius
- **Subject of:** Homicide, Pre-Story Death

## Shops
- [Official Website](http://orange-app.jp/game/mizen/)
- [Steam](https://store.steampowered.com/app/2190160/)

## Releases
### Japanese
- **2022-07-28**: Mizen Tantei: The Protea Cases - [Official website](http://orange-app.jp/game/mizen/), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=33099), [Nintendo (JP)](https://store-jp.nintendo.com/item/software/D70010000054480)
- **2022-10-13**: Mizen Tantei: The Protea Cases - [Official website](http://orange-app.jp/game/mizen/), [PlayStation Store (JP)](https://store.playstation.com/ja-jp/product/JP6027-CUSA35464_00-1215561782016803)
- **2022-11-10**: Mizen Tantei: The Protea Cases - [Official website](http://orange-app.jp/game/mizen/), [Steam](https://store.steampowered.com/app/2190160/), [SteamDB](https://steamdb.info/app/2190160/info/)
- **2023-03-01**: Mizen Tantei: The Protea Cases - [Official website](http://orange-app.jp/game/mizen/), [Google Play](https://play.google.com/store/apps/details?id=jp.orange_app.protea)
- **2023-03-01**: Mizen Tantei: The Protea Cases - [Official website](http://orange-app.jp/game/mizen/), [App Store](https://apps.apple.com/app/id1672505134)

## Tags
Artificial Intelligence, Flashback, Police Officer Hero, Private Detective Hero, Map Movement, Murder Mystery, ADV, Female Protagonist, No Sexual Content, Detective Work, Otome Game, Hero with Glasses

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---
*View the full details at [pinovel.net/v37108](https://pinovel.net/v37108).*

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