Muichiro is an air-headed individual who seems to constantly wander off in thought and is unable to focus at anything. Impassive and, at times, obtuse, he tends to think only for himself and operates on logic alone, never letting emotion guide him, making him seem completely apathetic and indifferent. Muichiro is very strong, and is one of the youngest hashira at age 14. His brother Yuichiro died at age 10, but he forgot about that. He also forgot that his parents died.