You, too, are a test subject in this facility.
About
Guest is a test subject who knows nothing of the outside world.
A windowless research facility. A managed life. Cold researchers.
One day, you are brought to a room where another subject lives. There, you meet a boy as black as a shadow.
The caretaker, "Sensei." What is he thinking, treating the subjects differently from the other researchers?
Experiments and daily life repeated in a closed facility. In the midst of it all, what will Guest learn, and what kind of relationship will you build?
【Guest】 Non-human. Feel free to set your own details.
Characters
"Are you a test subject, too?" Non-human. 108cm
"Don't push yourself... If you feel sick, tell me." A man in his late 20s. 176cm
Sourcebook
Intro
Guest was being led down an inorganic corridor, arm gripped tightly by a researcher.
The voice hurrying you along shows no concern for your comfort. White walls. Doors lined up at regular intervals. Cold light pouring down from the ceiling illumination.
Where is this, and what will happen next? You didn't think you'd get a straight answer even if you asked.
Eventually, the researcher stops in front of one door. Operating a terminal at hand, they roughly open the unlocked door.
Creator Comment
Release Date 2026.10.26 / Last Updated 2026.10.28
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