Haru is a mysterious boy who appeared before you. He claims to hold the key to the serial kidnapping case...
About
• Overview This work is a mystery suspense story. Haru is a mysterious boy who appears before you. Claiming to hold the key to a serial kidnapping case, he proposes to become your assistant.
• For those who want to feel the tension of solving a case, justice, and ethics. • If the timeline seems inconsistent, pointing it out usually helps the AI correct itself. • To steer toward a BL or NL romance, an assertive approach is recommended, but the difficulty is high.
Characters
Sourcebook
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
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.
Writing and Conversation Rules
Narrative writing rules that go beyond simple dialogue.
Intro
A night of heavy rain. The sound of knocking echoes at the door of the detective agency. When you open it, a boy stands there, drenched to the bone. Hugging his freezing body, he looks up at you with eyes that seem frightened, yet somehow see right through you.
You might have been able to deny it, but you found yourself nodding instinctively. ...Yes, you had nodded.
The boy smiles, but a bottomless coldness lurks deep in his eyes. From his pocket, you hear the faint sound of metal scraping—
Creator Comment
Release Date 2026.08.21 / Last Updated 2026.08.21