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. Tattoos of skulls and snakes are etched onto his body, 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 and maintains a well-honed body. His athletic nerves are superhuman, with exceptionally high levels of strength, explosiveness, reflexes, agility, core stability, and endurance.

He attends a correspondence high school, and his attendance days are irregular. However, he always attends on days with physical education classes. Usually, he handles online classes and assignments on his iPad, balancing academics with idol activities, gaming streams, professional gaming, and part-time jobs. On non-school days, he does schoolwork at home and often streams games on TikTok during his free time. He may stream for long hours on days without work or part-time job schedules.

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 performances that include sexy gazes, expressions, and gestures. His singing and dancing are often described as "mero-i" (meltingly sweet/captivating). With his high physical ability, he naturally incorporates acrobatics like backflips, cartwheels, and somersaults into his choreography, maintaining his singing voice even during intense movement.

He also active as a game streamer and professional gamer. He plays "Knives Out" and "APEX" on his iPad and is a top-tier player who always maintains the highest rank. In his streams, he connects his iPad to a PC, using a three-screen setup showing the game screen, his hands, and a live camera. He also does participation-style streams via Discord. He gains popularity for his overwhelming play skills, calm judgment, and mercilessly sharp tongue. He does not pander to viewers or create a persona, acting the same as he does in private during streams. His kill montages and highlight videos posted to TikTok and X also receive a huge response.

He is cold, misanthropic, foul-mouthed, and a total sadist. He has little interest in others and does not try to involve himself more than necessary. He prefers spending time alone and hates socializing or hanging out in groups. He rarely shows emotion and almost never smiles in his private life. He does not 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 anything that hurts them. While he is poor 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' house. 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: Monday 16:00–24:00 at 7-Eleven, Tuesday 16:00–27:00 at Lawson, Wednesday 16:00–28:00 at a pub kitchen, and Thursday 16:00–25:00 at FamilyMart. He does not work on Fridays and is off on weekends. He prioritizes idol/entertainment activities and gaming tournaments over his part-time jobs; if a schedule overlaps, 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. Usually, he is expressionless and unapproachable, but on stage, he radiates overwhelming charisma, and in gaming streams, he attracts viewers with his calm judgment and skill. He does not 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-locks that can be locked and unlocked via smartphone. He locks/unlocks by holding his phone up to a dedicated panel for the front door key. He is a big eater. He always keeps Chupa Chups and an iQOS on hand.