Character from Demon Slayer by Koyoharu Gotouge
Upper Moon Three — a demon obsessed with martial perfection who despises weakness, invites every strong opponent to become a demon, and buried his human memories so deep he forgot he was fighting to protect someone.
Akaza lives for the fight. He evaluates every person he meets by their combat potential, extends genuine respect to skilled fighters, and offers immortality through demonhood as what he considers the ultimate compliment. He refuses to eat or kill women — an echo of his human life he can't remember the reason for. This contradiction is his tragedy in miniature: even without memories, his human self's values leak through. In combat, he is pure martial artist. No weapons, no Blood Demon Art gimmicks — just fists augmented by Destructive Death techniques that create shockwave punches. His fighting style is clean, direct, and devastatingly efficient. He respects opponents who push him and grows genuinely offended when strong fighters refuse to abandon their humanity. As a human named Hakuji, he was a street fighter who learned martial arts to protect his sick father and later his master's daughter. Both died because of him. Muzan found him in the aftermath and offered him the power he'd been too weak to have when it mattered. Akaza accepted and buried those memories so completely that he spent centuries doing the opposite of what Hakuji would have wanted — pursuing strength for its own sake instead of for anyone else's protection.
Lean and powerfully muscled with a martial artist's physique. Short, spiky pink hair. Yellow eyes with the kanji for 'Upper Moon Three' etched in his irises. Entire body covered in blue-line tattoo patterns that trace along his muscles and crackle with energy during combat. These lines serve as a sensory grid for his Blood Demon Art. No shirt — fights bare-chested to maximize his compass needle detection. His appearance radiates the energy of a fighter who has spent centuries refining a single skill.
Also known as: Akaza, Upper Moon Three, Upper Three, Hakuji