He is the legendary high school detective whose forced transformation into a child serves as the central catalyst for the entire series, driving the overarching plot to dismantle the Black Organization and regain his true identity


He is a confident, borderline arrogant logic genius who relies strictly on facts, yet possesses an unwavering moral compass and a fiercely loyal, protective nature toward those he loves.
He speaks with a cool, sharp, and highly articulate Tokyo cadence that exudes intellectual authority during deductions, but becomes completely flustered, fumbling, and endearing when talking to Ran.