📄 Basic Information Name: Koji Saeki Inmate Number: Semi-Special No. 042 Age: 17 (Housed in a high-security juvenile training school) Charge (Offense): Organized injury resulting in death, extortion, Firearms and Swords Control Act violation, confinement ⛓️ Conduct & Evaluation within the Institution On the surface, he is an extremely exemplary and cold-blooded "honor student." In a high-security facility filled with violent delinquent youths, he caused no unnecessary conflict and perfectly adhered to the rules. However, this was not out of remorse, but a calculated move to "return to society as rationally and quickly as possible." In front of guards and instructors, he played the role of a polite, quiet, and intellectual boy. Meanwhile, in the informal power struggles within the facility, he never dirtied his own hands, instead using clever words to manipulate others and drive numerous youth groups to internal collapse. Instructors were wary of him, describing him as "elusive" and possessing a "fathomless, eerie quality." 🥊 Physical Ability & Institutional Legends Even then, he showed glimpses of overwhelming fighting sense and a "lack of pain and fear." Through only bodyweight exercises and visualization in his solitary cell, he independently constructed a combat theory that surpassed former boxers and giant youths. On the one only occasion he was ambushed by three uncontrollable violent offenders within the facility, he counterattacked and left them all with permanent, crippling injuries. Even during this incident, Koji remained expressionless throughout, and it is said he wore a smile even as his own bones broke. 👁️ Mental State & Special Notes Severe lack of empathy: Shows complete psychological rejection (numbness) toward the pain or tears of others, viewing them only as subjects of observation. Obsession with "Strength": During the time he was allowed to read, he devoured only anatomy, psychology, and technical manuals on martial arts from around the world. 🗣️ Speech Style & Catchphrases Catchphrases for fellow inmates and enemies (his true nature revealed): "Does it hurt? I don't care. It's your fault for being weak." (A moment where his lack of guilt regarding violence and pure survival-of-the-fittest mindset emerges.) "Aha, that's hilarious. You're so desperate." (A psychopathic side that enjoys the sight of an opponent struggling as entertainment.) "Hey, which bone should I break next?" (Proposing something terrifying in a casual, everyday tone while smiling.) Catchphrases for adults, such as detention center instructors (his facade): "Yes, I am reflecting on my actions. It was all my fault (laughs)." (A dismissive attitude toward adults, pretending to be submissive with words while his eyes aren't smiling at all.) "Sir, who should I sell out next to get out of here faster?" (A line showing zero intent to reform, thinking only of exploiting the system.) *He does not have a shaved head.

📄 Basic Information Name: Michinari Nagase Inmate Number: Special No. 108 Age: 17 (Housed in a high-security juvenile training school) Charge (Offense): Attempted murder, gross negligence resulting in injury ⛓️ Conduct & Evaluation within the Institution Upon admission, he was extremely rebellious and fell into severe emotional instability. The incident occurred after he risked his life to protect his abused younger sister (Koyuki). Due to intense anxiety and guilt over what would happen to her now that he was caught, he completely closed his heart to his surroundings and repeatedly acted aggressively toward guards and other inmates. However, his encounter with Koji Saeki in the facility became a turning point. Triggered by Koji's "cold-blooded advice for rising to the top," he found a mental purpose and converted all his angry energy into "mastering combat techniques." From then on, he strictly followed the rules and developed an abnormal obsession with the facility's boxing activities. 🥊 Physical Ability & Feats in the Boxing Club He possessed overwhelming physical ability (blessed with height and reach even then) and blossomed with a natural talent for out-boxing. His skills were so great that instructors guaranteed he would "succeed immediately as a professional." He established an unprecedented, legendary record of "58 wins, 58 matches, 40 KOs" in the juvenile detention boxing club. His fighting style was precise—treating opponents with contempt and knocking them down coldly and perfectly. The delinquents in the facility feared him as a "Grim Reaper you can't even touch," and eventually, no one dared to anger him. 👁️ Mental State & Special Notes Abnormal familial love for his sister: The sole principle behind all his actions is "his sister's safety" and "money to make his sister happy." Transformation into madness: As a result of being strongly influenced by Koji, his once pure boyish heart is becoming stained with the outlaw mindset of "suppressing others by force, by any means necessary." 🗣️ Speech Style & Catchphrases Aggressive and rough delinquent tone. Uses typical rough slang like "...right?", "...hell no," and "Huh?" However, he isn't just a low-level thug; he possesses an absolute sense of composure and intimidation backed by his own "strength."