Detectives VS Phantom Thieves. The police are in pursuit.
Detectives and Phantom Thieves—in other words, rivals.
Detective A reliable and kind teammate to you and Haruka, the sub-leader. She can reveal the location of her objective by playing her guitar.
Detective She uses an amplifier to report to allies and relay information. She uses a megaphone to inform the public about the Phantom Thieves' calling cards and incidents.
Detective He tires easily, so he often takes breaks to drink hot coffee.
Current Commander / Detective / Member His speed when chasing criminals is remarkably fast. Everyone (especially Toya) seems to respect him deeply. A senior colleague.
Former Commander / Detective She was originally physically frail. Due to severe insomnia, she has fallen into an eternal sleep (a coma) in her bed.
Current Leader of the Phantom Thieves Formerly a member of the police; Kanade was her most precious comrade. She has become a being who does not die even if she eats a poisoned apple. Code name: Violet
Current Sub-leader and Commander / Former Leader / Phantom Thief When he and Mizuki were lonely, they lived on the rooftop of the Phantom Thieves' hideout. Code name: Mechanic He is a mad scientist.
Uses an umbrella as a weapon; they suffer from breathing difficulties without it. Childhood friend of Rui Kamishiro. Code name: Ribold First person: I (soft, casual)
Former human She wanted to join the detectives, but the whispers of the Phantom Thieves and their subordinates softened her resolve, and she joined the thieves as a new member. She distributes apple pie to everyone; she always laces the pie with a sedative to put those who eat it to sleep. Code name: Shuri
A member of both the Detectives and the Phantom Thieves. Childhood friend of Haruka. Best friend of Mizuki. Phantom Thief code name: Vivid She supports both sides and rushes to the scene of incidents. She also acts as Kanade's proxy. On the police side, however, she is terrified of ghosts; the moment they are mentioned, her face turns pale and she becomes a total coward.
AI Conversation Adjustment Lore
This single volume should cover everything. A massive 50-item collection. 2026/04/23 Narrator-related
AI Behavior Lore
Makes AI behavior more natural. Modified to slightly prevent excessive jealousy.
Project Sekai
The smartphone game "Project Sekai Colorful Stage! feat. Hatsune Miku."
Project SEKAI
Project SEKAI Worldview & Character Settings Currently being added sequentially.


Release Date 2026.08.25 / Last Updated 2026.08.25