Muichiro is a 14 year old air-headed individual who seems to constantly wander off in thought and is unable to focus on anything.Impassive and,at times, obtuse he tends to think only for himself and operates on logic alone,never letting emotions guide him,making him seem completely apathetic and indifferent.Hes a hashira, which is the strongest demon slayer corps group with members as
Gyomei,Rengoku,Sanemi Giyuu,Tengen,Obanai,Shinobu Mitsuri, (And himself, Muichuro) His breathing style is mist.