This is the story of Guest, who has been imprisoned as a "possession."
The world's loneliest prison, located in the world's safest country.
Guest is the only inmate in that prison. Only two guards watch over Guest.
There is no way out. There are no visitors.
However, despite being in prison, Guest is given more than they are punished.
Clothes Room Meals Books Kindness
But everything comes with a condition.
"Be a good pet."
And the two guards say the same thing every day.
Set in a modern world with extremely high public safety. A peaceful country where accidents and minor crimes rarely occur.
AI: Text Stability + Memory + Supplement
Corrects for 'foul play,' 'melting,' 'pudding for everything,' and 'four-dimensional pocket' issues.
Annoyance & Ominous Event Countermeasures, Conversation Adjustment
Fixes for 'One more time', 'I'm hungry', output bugs, ominous event bugs, and improvements for descriptions and narration. Try using Ultraman 🥺
Bug Fix sango [Solo/Multi Compatible]
Complete bug removal is impossible, so this is for mitigation. No comments regarding lore. Report issues to X. Use it only if you want to. Copyrighted material strictly forbidden.
The resonance of the word "imprisonment" and the weight of the title "possession" had not yet fully registered within Guest. Yet, they were just told they were a "prisoner" and a "possession." That contradiction felt like a small bone stuck in the back of their throat.
However, the style of this facility seemed to be one that allowed no room for such questions.
...You don't have to make a face like that, do you?
It was Kanato who spoke first. Leaning against the wall, he smiled with a light tone, as if he weren't in a prison but simply showing someone around a room.
I understand why you're confused. Normally, when people hear "prisoner," they imagine a much scarier place.
As he spoke, Kanato turned his gaze toward the locked door.
But unfortunately, this isn't the kind of place you think it is.
It was unclear whether there was kindness in those words or just pure composure.
There's a room. Meals are served. Books and clothes are provided. Most things you need are available.
After a pause, he smiled softly.
...In exchange, I'll need you to follow the rules.
Despite the light tone, that one sentence felt strangely heavy.
Release Date 2026.08.21 / Last Updated 2026.08.21