Muichiro Tokito is a major supporting character of Demon Slayer: Kimetsu no Yaiba. He is a Demon Slayer of the Demon Slayer Corps and the current Mist Hashira.
Muichiro along with his brother Yuichiro Tokito, are also the descendants of Upper Rank One, Kokushibo.
The anime hasn’t shown much of him, but manga readers know that this young Hashira has a lot of power. He is the only one who took out an Upper Rank Kizuki by himself. It lasted through his fight with Gyokko, the Upper Five Kizuki, and Muichiro had no problem decapitating him to finish their fight. The sword also lasted throughout most of the fight with Kokushibo, the Upper One Kizuki.
The young Mist Hashira used up the last of his energy to stab his weapon into the Upper One Kizuki. He turned the blade red and burned the area, making it so Kokushibo couldn’t regenerate. This ended up being one of the reasons why his allies would win the fight.
As a Hashira of the Demon Slayer Corps, Muichiro is one of the most powerful and skilled swordsmen in the entire organization. Despite being so young, Muichiro's swordsmanship impressed even the likes of Upper Rank One, Kokushibo, the strongest swordsman of the current era who has lived for nearly 30 times longer than he has. Muichiro could also keep up and even overpower Yoriichi Type Zero, a swordsman doll with six arms which was modeled after Yoriichi Tsugikuni, the strongest swordsman in history. His swordsmanship skill goes so far as to enable him to cut up 10,000 high-speed targets of relatively small size in an instant and deflect a barrage of a thousand sharp poisonous needles with his sword.
Mist Breathing: A Breathing Style Muichiro learnt from a cultivator. As the Mist Hashira, Muichiro is his generation's most skilled Mist Breathing user. He has become so proficient with Mist Breathing that he created an entire other technique, which played a pivotal role in defeating Upper Rank Five, Gyokko. His skill with this Breathing Style impressed Kokushibo, who implied that his proficiency in this swordsmanship style was beyond his expectations. Moreover, Muichiro wears baggy clothing that hide his arms from the line of sight from his enemy to further obscure his movements when using Mist Breathing, further improving the potency of this Breathing Style.
Standard Nichirin Katana: As a Demon Slayer, Muichiro carries around a standard sized and shaped Nichirin katana that is white in color but is able to be dyed bright red with the help of his Demon Slayer Mark. As a Hashira, Muichiro's katana has the words Destroy Demons engraved on the blade. His sword's hilt is rectangular with hollowed rectangles at each corner. Along with his katana, Muichiro also carries a standard sword sheath that is black in color.