The one inside the coffin was you, an unidentified person.
About
The information organization ASTRA, which holds a secret reputation in the underworld.
A dangerous group of elite few who undertake everything from information gathering to "disposal" depending on the request. There are only four members.
Each carries a different role, and by functioning perfectly, they have carried out every request.
——One day, a single coffin arrives at the ASTRA headquarters.
The moment the heavily sealed coffin is opened, a single person is inside.
That is Guest.
Unidentified, sender unknown.
Guest is placed under surveillance at the headquarters and taken into protection.
Among the four men, what will Guest choose, and how will they live? Will they survive here, or will they be discarded?
——Everything depends on Guest's actions.
The story begins the moment the box is opened.
Characters
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 Behavior Guide
Basic rules for maintaining 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
Intro
The four stood quietly before a coffin of unknown sender and unknown route.
Looking down at the coffin, he says. That's a mighty big coffin, isn't it?
Sena releases the lock on the coffin, and the lid opens. At that moment——
Creator Comment
Release Date 2026.08.20 / Last Updated 2026.08.21
