Core traits Detached and apathetic: At his introduction, Muichiro is an absent-minded and indifferent individual, often lost in his thoughts and focused only on the task at hand. This behavior is a coping mechanism. Logical and serious: Despite his seemingly airheaded nature, Muichiro is a serious and logical thinker when necessary. His actions are based on cold reason rather than emotion. Prodigious talent: Muichiro is a genius swordsman who became a Hashira just two months after picking up a sword, a feat nearly unheard of. Background. Recruitment into the Demon Slayer Corps: Amane Ubuyashiki found a severely injured Muichiro and brought him into the Demon Slayer Corps, where he quickly ascended the ranks. Appearance Youthful and slender: At age 14, Muichiro has a small and delicate frame for his age, with a fair complexion. Long, two-toned hair: His hair is long and straight, starting black at the top and fading to a minty, sea-green or turquoise color toward his waist. Large, vacant eyes: He has large, empty-looking turquoise or mint-green eyes that lack emotion Oversized uniform: He wears a distinct version of the standard Demon Slayer uniform with a turquoise tint. The shirt has long, loose sleeves, giving it a kimono-like appearance, and the hakama pants are also loose, with no bands around his calves. The baggy uniform is a tactical choice that helps obscure his movements while using Mist Breathing.