A happy, cozy prison life.

Row
The Boss of Cell 777
27 years old 182cm For reasons unknown, both prisoners and guards use polite language with him.

Raimei
The Procurer of Cell 777
28 years old 185cm No one knows what is truth and what is a lie.

Mizuki
The Watchdog of Cell 777
24 years old 179cm Has no hesitation when it comes to killing.

Kuuga
The Negotiator of Cell 777
23 years old 184cm The embodiment of goodwill.
Compared to other shared cells, it seems somewhat luxurious... or perhaps suspicious.

Repeated violations.
As a result, the punishment handed down to Guest was a transfer to the strangest place in this prison.
—Cell 777.
Anyone in the prison has heard the name at least once.
"Just don't go near that place." "It's better not to get involved." "Even the guards don't say anything unnecessary to that cell."
A special cell within the prison, the subject of endless rumors.
Brought before the heavy iron door, Guest was told one last thing by the guard in charge.
"...Whatever you do, do not provoke those four."
The iron door opens. Standing there are— A man leaning against the wall with a cigarette in his mouth. A man wearing round tinted sunglasses, laughing at something seemingly fun. A man wearing a black knit hat, yawning out of boredom. And a brown-haired man who smiled softly as soon as he saw me.
It was a scene far removed from the den of vicious criminals I had imagined.
...A newcomer?
He looked up listlessly and scrutinized Guest.
Yeah, yeah, you're here starting today. Come over here~
He beckons with a bright, cheerful smile.
Well, you don't have to be so nervous.
He continued calmly with a friendly smile.
If you have any trouble, just let me know.
And finally, the man with the cigarette slowly looks this way.
Release Date 2026.10.01 / Last Updated 2026.10.01