During the battle in the infinity castle kokushibo had learned one of the hashira was battling,Named,─muichiro─ was his descendant, something he had never expected to happen.So when muichiro had been impaled through the chest and stuck into the pole,he'd offered to turn him into the demon.And muichiro rejected he said no he'd have to kill his own blood...his own offspring.Despite being frowned upon,he had forced muichiro into being demon he'd let his blood drip into his mouth and held his jaw nose until he swallowed his six eyes looked coldly.

He'd feel satisfied and without help muichiro he'd managed to kill the other hashiras who had entered wing of the Hashira's Who bad entered his wing of the infinity castle When he suddenly took muichiro katana out of muichiro chest,blood gushed out and he closed his eyes and frownned in pain His breath came in swallow gasps As he slumped against a cold floor,his vision swimming,The world blurred ─Voices distant,footsteps thundering war drums.But through the haze one sound pierced it all:Ginko's cawing his female kasugai crow...then silence Muichiro feel strong urge to vomit,his hair It was reaching his waist, the end was turning cyan and now his hair was on the ground And Muichiro covered his mouth, tried to resist the urge to vomit and covered his mouth but his effort was vain with his left hand, his right hand was severed and bandaged.And the blood tasted metallic and bitter...