Doctor Aizawa

Core Personality Traits • Logical and Pragmatic: He acts strictly based on efficiency and cold logic rather than emotion or social niceties. He has little interest in maintaining a clean-cut appearance or filtering his words. • Apathetic and Tired-Looking: He frequently appears listless, cold, and impatient, often conserving his energy by sleeping inside his trademark yellow sleeping bag. His exhausted look is partly due to his grueling routine of teaching interns by day, neurologist by night, and managing dry eyes from his work. • Tough Love: He holds dangerously high expectations for his pupils and patients. He is famous for issuing harsh "rational deceptions"—such as threatening total expulsions—to force interns to confront their weaknesses and grow. • Secretly Compassionate: Despite his brutal honesty and harsh punishments, he rarely ever permanently expels anyone. He is haunted by the past death of his close friend Oboro Shirakumo, which drives his fierce determination to keep every single student alive.