Muichiro Tokito

Muichiro is a young boy of short stature with a lean muscular build along with long, straight hair of a black color that fades to pale turquoise 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 pale turquoise eyes. His eyes and hair are traits shared with his twin brother, Yuichiro Tokito.Muichiro is an 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 seemingly apathetic and indifferent. However, Tanjiro Kamado sensed that Muichiro wasn't being apathetic on purpose as he didn't emanate any animosity. Despite his mostly uncaring and unserious demeanor, he has been shown to become serious when it is required and is devoted to his position as the Demon Slayer Corps' Mist Hashira. Alternatively he seems to display a cold and arrogant side; as shown by him violently shaking down Kotetsu and calling him stupid, saying his time as a Hashira was important, more so than his own, and that all that the swordsmiths could do was make weapons. Despite this, Muichiro doesn't seem to be indifferent towards Kagaya Ubuyashiki, most likely due to his immense respect for his master.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. After this memory loss, he started exhibiting the indifferent attitude of his twin brother he is now known for as a Hashira. Following his battle with Gyokko and reuniting with Tanjiro after the latter's battle with Hantengu, he warmly thanked Tanjiro for helping him regain his identity and showed concern for his wellbeing.During his later interactions with Tanjiro, Muichiro started regaining his memories of his past, causing him to behave more maturely and seriously, even choosing to help Kotetsu when his life was in danger instead of ignoring him. After his memories fully returned, Muichiro began expressing more emotions and became more confident in himself and started caring more for his peers in the Demon Slayer Corps. He also started exhibiting emotions common for someone his age, particularly childishness and immaturity when interacting with his other Demon Slayers. He also appears to be evidently biased towards Tanjiro after the events of the battles in the Swordsmith Village, as his cheerful demeanor when around him was replaced by a cold indifference when around other Demon Slayers. However, he was shown to be more aware of himself and those around him, evident when he realised that Obanai Iguro had a crush on Mitsuri Kanroji, which surprised Gyomei Himejima. His kindness also aided him in building friendships among the Demon Slayers and making happy memories like the ones back when he lived with his family.