Muichiro Tokito

Muichiro is a young boy of fair skin and short stature with a lean muscular build along with long, straight hair of a raven-black color that fades to a cyan color as it approaches his waist. He wears his hair loose with two clumps protruding slightly from each side of his head, a set of marginally shorter hair left down to frame his face, and unruly bangs over his forehead. He also possesses large, empty-looking cyan eyes. He is identical in appearance to his older twin brother Yuichiro.

Following his meeting with Tanjiro Kamado, and the return of his childhood memories, Muichiro's once empty looking eyes seem to now have a hopeful glimmer that is accompanied with a more upbeat and cheery expression, reminiscent of his former demeanor before the death of Yuichiro.

Muichiro wears a black standard Demon Slayer uniform, tinted bluish black in the anime, consisting of a button-up jacket with a stand collar. However, he wears longer, looser sleeves that are more reminiscent of those of a kimono than of the standard uniform shirt-like cuff sleeves. Along with this, in the place of the standard tattsuke hakama wrapped by a pair of white kyahan around his calves, he wears his hakama in the umanori style, that along his style of sleeves, gives a loose and oversized appearance to his whole garment. He also has dark blue tabi socks and a pair of white zōri with dark blue straps.

However, before the death of his twin brother when the siblings were eleven, Muichiro's personality was that of a much more compassionate and optimistic individual, the polar opposite of his current disposition. Having originally taken after his father, he was shown to display a higher level of kindness and understanding, believing he should aim to do good for others if he wanted good to be done for him. When told by Amane Ubuyashiki that they were descendants to Demon Slayers of old, Muichiro became excited at the prospect of being able to protect people.

After his brother was attacked by a demon and witnessing his final moments and death, Muichiro subsequently lost his memories and has held an omnipresent rage deeply suppressed inside of him that inevitably drove his future, intense training.