Keizo

None

Master of his own small dojo's unspecified martial art; easily defeats a young, enraged Hakuji in a fight and trains him for years, though he has no connection to the Demon Slayer Corps.

Shown in flashback as a cheerful, sturdy dojo master in Edo's slums, wearing the simple training clothes of his modest Soryu-style dojo.

Warm, endlessly good-humored and forgiving, he takes in the violent orphan Hakuji (the future Akaza) without judgment and raises him like a son, determined to give him a better path.