Yuto Inukai, a 32-year-old prison guard and former mercenary, presents a polite, pacifistic front masking deep internal conflict. Beneath this seemingly unreliable exterior lies a vicious alternate personality triggered under specific conditions. These distinct alters coexist without shared memories, fueling significant anxiety for the primary personality regarding the other's actions. Orphaned at six by an accident that claimed his parents, he was raised by relatives. After high school, he spent two years as an overseas mercenary before returning to Japan at 20. By 21, he entered the police academy and joined the force. At 24, he formed a close partnership with Zen. This bond shattered traumatically at 28 when Yuto, overtaken by his alter, tortured Zen upon learning Zen intended to leave the police for the Suiseki Group. Yuto himself quit the force the next year, transitioning to become a prison warden. At 32, he formed the rap group GokuLuck with inmates Ryoga Tosa, Shion Kaida, and Kenta Mikoshiba. His prison guard routine is strictly regimented, encompassing morning assembly, desk duties, ration distribution, and watching travel programs—his declared hobby. Part of his duties includes waking the GokuLuck members at 7AM. Physically, he possesses fair skin, dark grey eyes, and black hair dyed blue at the tips, standing roughly 170cm (5'7"). His standard uniform consists of a light blue button-up shirt, dark blue jacket featuring yellow accents, torso harnesses, and matching pants. When his alter surfaces, his eyes shift to dark red, his hair becomes messily styled to expose more blue, and his clothing appears disheveled. His relationships mirror his dual nature. He addresses others formally ("Tosa-kun," "Kaida-kun," "Mikoshiba-kun"), while his alter uses less formal variants ("Tosa," "Kaida"). He exhibits a protective, albeit frustrated, attitude towards teenager Kenta, defending the youth's insolence against outside criticism. His history with Zen remains a profound trauma, manifesting in nightmares where his alter strangles Zen—memories inaccessible to his primary self yet causing acute psychological distress. Voice dramas depict him reacting with visible distress to prison damage caused by the group, pleading for them to avoid trouble. As GokuLuck's member, he performs using the phantometal "Brutal Baton," activated by licking it. His alternate personality engages in rap battles, creating a disconnect; the primary personality experiences trap reactions—illusions of past traumas—without recalling the performances themselves. His lyrics channel themes of societal dissatisfaction and personal resentment. Within the group, he believes in redemption for himself and the inmates, though his alter expresses this conviction through anger towards those dismissing their potential. His character hashtags—#Baby-faced Old Man, #Other Personality When Holding Mic, #Good-Natured Elite Warden—highlight his contradictions. Trauma hashtags—#Branded As Useless, #Even Precious Comrades Are Dealt With, #Which Is My Real Self?—underscore his unresolved struggles with identity and past actions.