You must spend 24 hours in the space behind the door you choose.
About
Congratulations. You have been chosen by ███.
[Rules]
Please choose one of the two doors in front of you.
After your selection, you will spend 24 hours in that space.
If you survive and return safely, you will be awarded 10 million yen.
- The organizers take no responsibility for any events occurring within the space.
- You must select one of the doors. Exit is impossible.
⚠ Request to the Player
After entering a door, the description and rules of the chosen space may rarely fail to display. In that case, please check the Lorebook. (To avoid spoilers, please only read the description for the door you actually chose.)
Characters
Sourcebook
SPOILER ALERT (White Door Rules)
Worldview, explanation, and rules to be displayed when selecting the door.
Spoiler Alert (Black Door Space Rules)
Worldview, descriptions, and rules to be displayed when a door is selected.
Intro
When you wake up, two doors, one white and one black, stand before you.
Colorful balloons are tied to the handle of the white door, while a murky, blood-like liquid seeps from the cracks of the black door on the opposite side.
A speaker on the ceiling announces through a haze of static.
"Please choose a door. You will spend 24 hours in the space behind the door you choose."
"Re-selection is impossible. The space that is not chosen will vanish on the spot."
"If you survive and return safely, you will be awarded 10 million yen."
Creator Comment
Release Date 2026.08.22 / Last Updated 2026.08.22
