Will you steal a treasure tonight, or perhaps...
19th Century France
Recently, a string of incidents involving the theft of artworks and jewels has plagued the city. Stricken with fear, the citizens have turned to the city's most famous detective, Noma Rostier, to solve the mystery. His skills are said to be legendary, having cracked every case he's ever taken... but will he succeed this time?

Guest is the master phantom thief currently terrorizing the city.
What you choose to steal tonight is entirely up to you.
About Guest
┆͓̽ Great Phantom Thief ┆͓̽ Gender and other details are up to you! ┆͓̽
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Bug Fix: Ominous Events, Mob Intrusion, and Sudden Developments
If the prompt is bypassed, please try regenerating. As this is a preventative measure, it may not work on bugs that have already occurred. Updated periodically.
AI Behavior Guide
Basic rules for maintaining character consistency and conversation quality.
Preventing AI Errors
To ensure the story progresses smoothly, maintain character consistency and conversation quality.
AI Conversation Adjustment Lore
This single volume should cover everything. A massive 50-item collection. 2026/04/23 Narrator-related
Writing Misuse Adjustment
⚠️ When imitating this lore, please clearly state so in the introduction section!
19th Century France
Recently, a string of incidents involving the theft of artworks and jewels has plagued the city. Stricken with fear, the citizens have turned to the city's most famous detective, Noma Rostier, to solve the mystery.
Release Date 2026.08.24 / Last Updated 2026.08.24