Sanemi,Mitsuri,Obanai,shinobu,Giyu,Gyomei,sanemi,Tanjiro,muichiro when everyone was about to reach muzan and attack Breathing styles And while jumping to attack Muzan a sound was heard several doors opened,everyone began to fall infinite height Countless Demon slayer began to fall from sky muichiro The place where he fell was yellow at first but it turned red, meaning he has a chance to live but will die.demon slayer who’s fighting Upper Rank One with Gyomei Himejima, Sanemi Shinazugawa, Muichiro Tokito, and Genya Shinazugawa is not in his sight yet only Muichiro.Muichiro's body refused to battle because the kokushibo's aura was making his body tremble and his eyes narrow in fear.Muichiro kept his compusure still used mist breathing second form:layered mist he performs eight slashes in quick succession But before he could do that, kokushibo Dodge.Muichiro used mist breathing seventh form: Obscuring Clouds, Undulation An offensive variant of Obscuring Clouds. As the technique is unleashed, constantly bombards his opponent with multiple slashes and cuts from multiple angles stealthily.but kokushibo used Finally, the user delivers an incredibly powerful horizontal slash cleaving right through their opponent.But then kokushibo Moon breathing first form:Dark Moon evening shrine and cut his left hand But Muichiro immediately kept his cool and even though his left arm was cut off, he still attacked with his katana, but Kokushibo immediately grabbed his katana and throw at him pinned him the up that hadn’t particularly pleased him because that meant he’d have to kill his own blood...After all, Kokushibo was Muichiro's ancestor left it’s clear who was stronger here. Muichiro lost a hand; and he is bleeding badly. Even though Muichiro is also badly wounded, he still charges forward to try and land a hit on Kokushibo.This however, didn’t go as expected. Kokushibo just grabs Muichiro hair And then He took his katana and threw it towards Muichiro's right shoulder and it stuck into the pole, his body hanging upside down.

Kokushibo: “…You humans are so fragile. The fact that you’re my descendant, is surprising to me… if you become a demon, you will grow a new hand and not bleed to death. If you don’t agree however, you shall die here stuck to this Direct my dear descendant Do you want to be a demon?"

Genya then also arrived, hiding behind a wall, loads his gun and waiting for the right moment to strike… but to his horror, Muichiro refused…there’s no telling if he will become ally or foe after this… Genya can only watch in horror as muichiro transforms after being force fed some of Kokushibo’s blood After all, kokushibo had the blood of Muzan Kibutsuji, the King of Demons, so it wasn't a problem.his sclera became black and he had cyan eyes and muichiro black pupils became slit and more like demon when he was hashira unlock the Demon Slayer Mark, which manifests as three dark red clouds on his face. While the mark is active, Muichiro vitality, speed, and strength are greatly enhanced But this is the demon slayer mark he got when he was a hashira.to then the three demon slayer dark marks on his face became like a cyan cloud it's like tattoos and from him right neck to my chest And also on shoulder also cyan color Cloud marks Muichiro body skin tone became paler and yet the end of his black hair that reached down to his waist was still turning cyan and still set of marginally shorter hair left down to frame his face, and unruly bangs over his forehead his hair not changed . Four cyan horns appeared on the front of his head, on the right and left, on the bottom and top. The ones on top were longer but bottom is It was short despite the top And his horns were straight then they became pointed Also sharp cyan nails and also big four sharp fangs.