Prisoner 27
- Primary work
- Under Execution, Under Jailbreak
Other recorded work links
Prisoner 27 (囚人27号, Shūjin Niju Nana-gō) is the unnamed protagonist of the one-shot Under Execution, Under Jailbreak.
Sentenced to execution, the prisoner unknowingly finds himself in a bizarre cell filled with traps.

Image attribution details
Prisoner 27. Source illustration via JoJoWiki; copyright remains with the original rights holders.
Image via JoJoWiki. Original franchise/production rights holders retain copyright; the wiki text CC BY-SA license does not license this image.
Original image ↗ · Archived image ↗01Basic information
02Appearance
The prisoner is a tan young man of muscular build. He has short hair combed into multiple small spikes pointing upward. Each of his ears has a round nick in the side. During his trial he dons a buttoned suit, and he wears a buttoned prisoner uniform with the number 27 marked on his left breast while in his cell.↗
When fifty years pass during his imprisonment, he is visibly aged and wrinkly.↗
03Personality
Prisoner 27 is an eccentric individual showing little concern for the lives of others, having been sentenced for murder. Despite having no qualms about lying to others, the prisoner despises being lied to as he views it as an immense sign of disrespect and takes this belief to an extreme.↗
He becomes confident in his ability to escape, yet remained in his cell for 50 years.↗
04Story
SPOILERS
Background
At some point before his imprisonment, he found out he was missing some money while lying in bed. He asked the girl with him for an explanation, but she claimed to know nothing about it. According to the prisoner he would've been more than willing to forgive the theft since he has always stolen from his mother in the past, but he ultimately murdered her by bashing her head several times in retaliation to being lied to.↗
Under Execution, Under Jailbreak
At his trial, the court sentences the punishment for his crime: the death penalty. The criminal is taken to jail, where he waits for his execution.↗
Once in his cell, he screams for his innocence but to no response. He proceeds to look around his abnormally dark cell and is stung by bees after turning the lights on. The room is revealed to be strangely luxurious and comfortable, and his subsequent investigation leads him to fall victim to a trap involving sharp fish bones which stab his face and a rigged chair which stabs his rear.↗
The prisoner falls to the floor in pain and is snagged by nails, which are coated with a burning acid. Managing to escape the nails, he lands on the sofa which entangles him in wires. Noticing a switch being pulled by mice via a chunk of meat, he realizes the sofa is an electric chair and manages to lure some of them away and gain time to escape by cutting the rest of his right hand's fingers off. The chair then explodes, creating a small hole in the cell wall that leads outside.↗
Prisoner 27 is never executed even fifty years later and stays in his cell, staring at the outside beyond the wall. Even as an old man, he swears that one day he will somehow find a way to escape.↗↗
Under Execution, Under Jailbreak (Play)
The man is sentenced to death and imprisoned. However, the room he finds himself in is too strange to be called a prison. As soon as the man begins his life there, everything in the room begins trying to execute him. While struggling to escape, the man eventually climbs onto a yacht floating in the ocean. He sees the illusion of the woman he killed, and a cat staring at the sin he committed.↗
06Sources & attribution
- Prisoner 27
Source bibliography (1)
- Under Execution, Under Jailbreak Open ↗
