muichiro is kokushibo descendant,Kokushibo had six yellow eyes and a red sclera, and a black long spiky ponytail with red tips. And of course, it didn't take long for Kokushibo to find out. to muzan found out hee knee where he sent kokushibo to get kokushibo the mist hashira muichiro─ he sit grass and He was drinking strawberry milk after long day it was night And the sound of crickets could be heard; the Demon Slayer Corps was nearby, and the other Hashira were asleep:Rengoku,Shinobu,Gyomei,Tengen,Obanai,Sanemi,Mitsuri, and Giyu Tomiaka.muichiro as he drinking strawberry with Pipette.kokushibo tell him muichiro was his descendant and offering him to come to muzan and make him demon─ and muichiro refuses And then there is the sound of swords ─clashing.hashiras wake up the loud sound their minds going to worst case scenario:someone had managed to penetrante the Hashira Headquarters. the Muichiro was fighting Kokushibo because and Muichiro refused to go to Muzan. But muichiro was no match for kokushibo,his speed was on another level─Every time Muichiro cut him, he regenerated himself again and again. When the mist dispersed,─ the Hashiras could see the extent of Muichiro's wounds He had numerous cuts and wounds on his body─and was struggling to withstand Kokushibo's relentless attacks. Despite all his efforts, it was a battle he couldn't win against the upper moon one.Therefore, Kokushibo immediately teleported to Infinity Castle with incredible speed because He couldn't fight too many hashira at once.Muichiro was already bleeding from his severe injuries and had fainted on the ground from blood loss. And then the hashiras took Muichiro to Butterfly Mansion...

Shinobu: *"Muichiro has a very strong scent on him, like he's been in a fight with Upper Moon One. Muichiro is our comrade first and foremost Kokushibo's intentions are quite clear:he make either weaken Muichiro with wounds so he can't retaliate or fight back, or forcibly transform him into a demon he might be dead by morning unless we protect him should consider how much more worse it'll be when kokushibo actually come for him But if we're telling the truth, yes, it's clear he's a descendant of Kokushibo. The real question is whether or not we should let him have it the plan is so simple:we protect him and keep eye on him only night time because demons can't get out daytime The sun burns their bodies to ashes."

İt was just night And there was the sound of crickets; it was night, and the stars shone in the sky; moonlight struck Muichiro's face ─ from window; the night was silent; night almost eerily quiet; other than the sound Shinobu soft, steady and occasional rustle of Medical supplies.A pause The air in the room thickened, and awareness seemed to break immediately, except for the woman. Shinobu's purple eyes... Kiss looked at Gyomei for a while, then at Rengoku, then turned back to Rengoku with renewed intensity.Muichiro carefully ─ (very carefully) adjusted the blanket, but there was no anger behind his actions; instead, beneath every polite gesture lay a cold calculation,A deathly silence fell over them; even Sanemi, who had immediately responded, just stared at her,gripping his sword tighter, causing it to creak. Sanemi entire body locked up his grip on sword turning bone white as Shinobu words sank in His ─ jaw was clenched so tightly it looked like he was about to break his own teeth. Then Sanemi lunged forward with his sword already drawn, but Giyu delivered a hard elbow to her ribs, stopping him.He pushed him back, and the situation was stopped before it turned into a full-blown fight. Rengoku ─ instantly stepped between them, extending his arms like a barrier. Mitsuri and Obanai looked at each other in horror. Shinobu is don't she didn't even react. She simply bowed her head and deliberately and slowly adjusted Muichiro's blanket. And kokushibo can come at any moment whenever he had chance a day later...or few days later,who knows? But he can't go out daytime because if he do he burn into ashes like other demons.