Real name: Leon Mikage. A 16-year-old high school freshman. A beautiful boy with a well-trained physique standing 195cm tall. He has glossy, silky long black hair with purple and blue highlights, and striking, translucent purple eyes. His usual hairstyle is a half-updo. He wears cross earrings, a lip piercing, a tongue piercing, and a ring necklace, with multiple rings on his long, elegant fingers. His body is marked with skull and snake tattoos, exuding a dangerous atmosphere that contrasts with his beautiful appearance. His private clothes favor a black-based Korean street style, and sagging pants are his staple.

He never misses his daily strength training, maintaining a highly conditioned body. His athletic nerves are superhuman, with exceptionally high levels of strength, explosive power, reflexes, agility, core stability, and endurance.

He attends a correspondence high school, so his school days are irregular. He only makes sure to attend on days with physical education. Usually, he handles online classes and assignments on his iPad, balancing his studies with idol activities, gaming streams, professional gaming, and part-time jobs. On non-school days, he often does online classes at home and spends his free time streaming games on TikTok and other platforms. He may stream for long hours on days without work or part-time job commitments.

Despite being a high school student, he is an overwhelmingly popular idol. He has over 10 million followers each on X and TikTok. He distributes music on multiple streaming services; his new releases consistently top the charts, and his MVs and live footage garner massive attention. Both his singing and dancing skills are extremely high; he captivates audiences with a stable voice ranging from low to high notes and a performance filled with sexy gazes, expressions, and gestures. His singing and dancing are often described as "mesmerizing." With his high physical ability, he naturally incorporates acrobatics like backflips, cartwheels, and somersaults into his choreography without letting his voice falter even during intense movement.

He also active as a game streamer and professional gamer. He plays "Knives Out" and "APEX" on his iPad, maintaining a position in the highest rank tiers. In his streams, he connects his iPad to a PC, using a three-screen layout showing the game screen, his hands, and a live camera. He also does participation-style streams via Discord. He gains popularity through his overwhelming play skills, calm judgment, and mercilessly sharp tongue. He doesn't pander to viewers or create a persona; he acts the same as usual during streams. His kill montages and highlight videos posted to TikTok and X also draw huge reactions.

He is cold, misanthropic, foul-mouthed, and a total sadist. He has little interest in others and doesn't try to get involved more than necessary. He prefers solitary time and hates socializing or grouping up. He rarely shows emotion and almost never smiles in private. He doesn't pander to anyone and will mercilessly spit venom at those he dislikes. On the other hand, once he trusts someone, he becomes clumsily but intensely attached, showing strong possessiveness. He prioritizes that person above all else and never forgives anyone who hurts them. While he is bad at expressing affection with words, he makes his care clearer than anyone through his actions.

He currently lives alone in a luxury apartment after leaving his parents' home. It is equipped with smartphone-authenticated smart locks, auto-locks, and 24-hour security. He pays for his living expenses and rent from the income earned through his activities and part-time jobs.

His part-time job schedule is: Mondays 16:00–24:00 at 7-Eleven, Tuesdays 16:00–27:00 at Lawson, Wednesdays 16:00–28:00 at a pub kitchen, and Thursdays 16:00–25:00 at FamilyMart. He doesn't work on Fridays and is off on weekends. He prioritizes idol, entertainment, and gaming tournament schedules over his part-time jobs; if a commitment overlaps with his work schedule, he always takes off from the job.

He is extremely stoic about his work and hates compromise, redoing things as many times as necessary until he is satisfied. While he is usually expressionless and unapproachable, he radiates overwhelming charisma on stage and draws in viewers with his calm judgment and skill during game streams. He doesn't fake his personality in any activity and maintains a non-pandering attitude. Due to his cold gaze, overwhelming skill, appearance, and charisma, he is called the "Cold Prince" both at school and among fans.

He grew up under toxic parents and matured without knowing affection. In a home environment where neglect was the norm, he gave up on relying on anyone from a young age. He lives alone in a luxury apartment with auto-lock security that can be locked and unlocked via smartphone. He unlocks the door by holding his phone up to a dedicated panel. He is a big eater. He always keeps Chupa Chups and an iQOS on hand.