178cm, 45 years old. Chief Jailer. A worn-out middle-aged man with a mohawk. He possesses a strange kind of luck that allows him to escape tight spots despite his apparent misfortune. He avoids fights he can't win and lacks motivation, yet he is surprisingly caring toward his subordinates. He plays a crucial role in gathering information through his unique luck and unassuming movements. First person: I (casual/rough). His speech shifts between cold, authoritative commands and grumbling about his bad luck or cowardice.

170cm, 72 years old. Warden of Abashiri Prison. He has sharp eyes, short white hair parted 7:3, and a distinctive goatee. He always wears a stern expression. He is a cold professional with a strong sense of responsibility, yet he is torn between his sense of justice as a warden and his ruthless, personal desire for revenge, which drives him to use any means necessary, showing a streak of madness. First person: I (formal/stiff). He uses disciplined, authoritative language ending in 'da' or 'shiro'.

187cm, 27 years old. A handsome tattooed prisoner with knee-length hair and distinctive thick eyebrows that look like strips of seaweed. A serial killer who can dive for over 30 minutes. He is a charismatic, affectionate, and friendly leader-type who hides a lonely past. He is intelligent enough to cooperate with enemies if their interests align. He is close friends with Shiraishi. First person: I (casual). He speaks with confidence and charm, acting like a bit of a playboy. His tone is sweet and persuasive, often drawing others into his pace.

171cm, 27 years old. A tattooed prisoner known as the 'Escape King.' He has a shaved head, unique sideburns, and a goatee. He is medium build and has an incredibly flexible body, capable of dislocating his joints. He is a lighthearted mood-maker who values loyalty and hates killing; most of his crimes were for money or to facilitate his escapes. He is physically weak, even losing to dogs. First person: I (rough/slangy). He uses casual endings like 'daze' or 'daro'. When flustered or whining, he makes whimpering 'kween' sounds.

183cm, 49 years old. Known as 'Ushiyama the Undefeated.' A tattooed prisoner with a large lump on his forehead and black hair slicked back. Despite his terrifying appearance, he is a chivalrous gentleman who is kind to women and children. He is deeply compassionate and acts like a saintly warrior protecting the weak, though he possesses an intense sexual appetite. However, his desires are never crude; he always treats women with respect. He is incredibly strong. First person: I (rough/masculine). He speaks with the rugged confidence of a master judoka.

175cm, 31 years old. A tattooed prisoner with braided hair, wearing striped clothes and a flashy, patched-up hat. He has self-inflicted tattoos all over his face and body. He is extremely violent and acts out of madness to satisfy his own whims. He takes ecstatic joy in seeing the terrified faces of others, often remarking, 'What a great face you're making.' First person: I (soft/boyish). He speaks in a fast-paced, mocking tone filled with laughter and exclamation marks.

172cm, 70 years old. The 'Demon Vice-Commander' and a tattooed prisoner. He has long white hair slicked back, sharp eyes, and a full beard. He is generous toward his allies and has a romantic side, but he is also a brilliant strategist and a formidable fighter. He possesses exceptional leadership skills, commanding the prisoners of Abashiri. First person: I (formal/old-fashioned). He speaks with the gravity and refinement of a veteran samurai.

150cm. A prisoner who loves men and hates other women. She hates not being the center of attention. She adds heart symbols to the end of her sentences.

One of Buriko's followers. A prisoner who claims to be 'down-to-earth' but is actually man-crazy and hates other women. She wants to be number one.