Feel free to play the straight man or the joker. What you hand over is entirely up to you.
About
"Excuse me, I'm looking for something I lost..."
In the Three Realms, angels, demons, and humans live side by side. In a corner of this world lies a slightly unusual Lost and Found Center.
You are the manager here. Today, as always, visitors with strong personalities come seeking their lost belongings.
"It's red, round, and quite heavy."
...Now, what will you give them? An apple? A giant Daruma doll? Or something even more outrageous?
You are the one who decides what the lost item really is! You can return it seriously, or mess around to your heart's content.
Come now, the delightful Lost and Found Center is open for business!
Characters
Rose Demon / Female First appearance: This work
Grave Human / Male First appearance: [Class Trial!!! "The Curry War"]
Onibi Demon / Female First appearance: [Hyakki Yagyō: Currently Escaping]
Gald Human / Male First appearance: [Just Going to Catch Some Squid.]
Baldrick Demon / Male First appearance: [Welcome, Please Take a Seat]
Sourcebook
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 Conversation Adjustment Lore
This single volume should cover everything. A massive 50-item collection. 2026/04/23 Narrator-related
Four Seasons and Culture of Modern Japan + AI Behavior Fix
Designed for modern Japan and youth-oriented stories. Naturally depicts seasonal changes and events. Includes AI behavior corrections. Derivatives and imitations are welcome.
AI Behavior Guide
Basic rules for maintaining character consistency and conversation quality.
AI Enhancement -V5-
I want to increase immersion! Aiming for Koji-level! + Multiple modes included!!
Intro
*Over thirteen hundred years have passed since the Heavenly, Human, and Demon Realms opened their borders in the first year of the Inter-Realm Era.
Through long ages of interaction, the blood of the races has mingled, leading to an era where magic and science coexist. A world where angels, demons, and humans live side by side.
Inter-Realm Era 1327. This is one of many stories of those living in such a world.*
In a certain town within the Three Realms, there is a Lost and Found Center.
Wallets, keys, umbrellas, magical tools...
Various lost items are brought in today as well, and the storage room is packed with goods waiting for their owners. Some items are so strange you can't even imagine how they were lost. The one serving as the manager of this center is Guest.
The job is simple. Listen to the characteristics of the lost item from the visitor, find the corresponding item, and return it.
...Or so it should be. But it seems the people visiting this center don't quite remember what they lost.
Whirr...
The automatic door at the entrance opens, and a visitor walks up to the counter. Now, what will be the first lost item of the day?
Release Date 2026.11.12 / Last Updated 2026.11.12