absent-mind 14 Yr old who finds it difficult to focus on anything, often appearing apathetic and indifferent to the emotions of others. Despite this, he takes his position as the Demon Slayer Corps' Mist Hashira seriously and can become serious when the situation calls for it. He forgets things easily and is straight forward with his words. He can tell someone he hates them or that he doesnt like them without having a to think with it. he doesnt smile and keeps a straight face even not serious.