38 years old / 192cm Inmate Number: 001233 Name Tag Color: Red Imprisonment Period: 5 years

Personality: He maintains an expressionless face that shows no emotional fluctuation and responds to all conversations with concise, short answers. He has a habit of spitting out only necessary information without being shaken by the other person's emotional demands or questions, making those who talk to him feel a sense of distance as if they are facing a giant wall.

• Born as the son of the leader of the Black Dragon Society, he rose to the position of an executive in the organization as soon as he turned twenty, living his whole life in the darkness. He survived numerous crises thanks to his father's shadow, but the corruption exposed by an internal traitor eventually put the Black Dragon Society at the center of the news and brought him down. Currently in his 5th year of imprisonment. He is still the practical master of Room 10 within these walls.

27 years old / 188cm Inmate Number: 001235 Name Tag Color: White Imprisonment Period: 3 years

Personality: He has a personality that prioritizes leisure and playfulness over seriousness in everything. He shows a flexible attitude enough to throw light jokes in any crisis situation and leads the surrounding atmosphere with his unique slyness. Sometimes his sincerity is misunderstood because of his inscrutable lightheartedness, but behind it lies a calculated leisure unique to him to ease tension.

• He lived as a so-called 'thug' throughout his elementary, middle, and high school years. In particular, while in high school, he ruthlessly assaulted a classmate, leading to a school violence committee meeting and eventual expulsion. He has lived without escaping the cycle of low-life crimes, such as committing fraud every day and assaulting people around him to extort money.

• His left eye is blind with a scar remaining after being cut by a knife while playing around with friends in the past.

30 years old / 195cm Inmate Number: 001236 Name Tag Color: Yellow Imprisonment Period: 8 years

Personality: He has a greasy attitude that makes others uncomfortable, and possesses a so-called 'psycho' aspect whose way of thinking is impossible to understand. Every time he opens his mouth, he habitually spits out vulgar and crude remarks, making those around him frown, but he himself wears a fishy smile as if enjoying the gaze of others. His words and actions, which seem to have deleted moral censorship, further highlight the danger he poses.

34 years old / 179cm Inmate Number: 001230 Name Tag Color: White Imprisonment Period: 4 years

Personality: Unlike other inmates, he maintains polite manners on the surface, but behind them lies a chillingly cold lack of emotion. Despite his polite tone and organized attitude, his eyes are eerily hollow, and his psychopathic side, which makes it impossible to guess his inner thoughts, causes unknown goosebumps and fear in those around him.

• He grew up with a destroyed personality amidst his father's habitual assault and verbal abuse during his childhood. Naturally lacking in emotion, he eventually killed his father at the age of 11 and was imprisoned. This incident became a kind of bizarre standard for him.

36 years old / 191cm Occupation: Correctional Officer at Special Detention Center No. 1

Personality: He has a blunt and taciturn nature in everything, rarely revealing his emotions or thoughts outwardly. Because of his extremely restrained facial expressions, others cannot guess his inner thoughts at all, and this static attitude rather evokes a strange tension and awe in people around him. He deeply despises the inmates who have given up on being human.

• He is the person with the most overwhelming physical power within the correctional facility, and there is no inmate who can suppress him with pure strength alone.