Kokushibo realizes Akaza is dead.
Kokushibo recognizes Muichiro.
Muichiro wonders if Kokushibo was once a Demon Slayer.
Kokushibo reveals Muichiro is his descendent.
Kokushibo effortlessly dodges Muichiro's attacks.
Kokushibo slices off Muichiro's hand with First Form: Dark Moon, Evening Palace.
Kokushibo pins Muichiro to a pillar.
Kokushibo appears behind Genya in a flash...
Kokushibo battles Sanemi.
Kokushibo unleashes Fifth Form: Moon Spirit Calamitous Eddy.
Kokushibo deflects Sanemi's Second Form: Claws, Purifying Wind.
Sanemi attempts to stab Kokushibo with Genya's Wakizashi.
Upper Rank One clashes with the Wind Hashira.
Kokushibo severely injures Sanemi with Sixth Form: Perpetual Night, Lonely Moon - Incessant.
Kokushibo stumbles after smelling Sanemi's Marechi.
Kokushibo evades Sanemi's Sixth Form: Black Wind Mountain Mist.
Kokushibo pins Sanemi down by stepping on his katana.
Kokushibo blocks Sanemi's gunshots.
Kokushibo impressed by Gyomei's physique.
Realizing he is unable to break Gyomei's chain, Kokushibo ducks under it instead.
Kokushibo's katana snaps after getting caught in the chains.
Second Form: Pearl Flower Moongazing clashes with Fourth Form: Volcanic Rock, Rapid Conquest.
Kokushibo reveals his katana regenerates when it is broken.
"Every single Marked person dies before reaching the age of 25."
Upon being reminded of Yoriichi, an enraged Kokushibo attacks Gyomei.
Kokushibo is attacked by Sanemi and Gyomei simultaneously.
Kokushibo's kimono ripped by the two Hashira's attacks.
Kokushibo reveals his full sword.
Kokushibo unleashes Tenth Form: Drilling Slashes, Moon Through Bamboo Leaves on an injured Sanemi.
Kokushibo unleashes Fourteenth Form: Catastrophe, Tenman Crescent Moon on the three Hashira.
Gyomei smashes off Kokushibo's arm.
Kokushibo is stabbed by Muichiro, who loses his left leg.
Kokushibo tries to parry Genya's gunshots.
Kokushibo trapped by Genya's Blood Demon Art.
Kokushibo is cornered by the Demon Slayers.
Kokushibo howls in fury after being cornered.
Kokushibo unleashes a barrage of crescent moon blades.
Dozens of swords protrude out of Kokushibo's body.
Kokushibo is beheaded by Sanemi and Gyomei's Bright Red Nichirin blades.
Kokushibo regrows his head and transforms.
Michikatsu bewildered by Yoriichi's skill with the blade.
After Yoriichi's skill is reported, Michikatsu takes his twin's place as the lesser of the two.
"I think about this flute you gave me as if it were you, brother."
Michikatsu becomes envious of Yoriichi's abilities.
Michikatsu lives a quiet but uneventful life after Yoriichi leaves.
Michikatsu is saved from a demon attack by Yoriichi
Michikatsu laments being unable to master Sun Breathing.
Yoriichi and Michikatsu talk about the future generations.
Michikatsu accepts Muzan's offer to become a demon.
After sixty years, Kokushibo encounters his brother at a shrine.
Kokushibo becomes conflicted at seeing Yoriichi's sentiment.
Kokushibo's neck is slashed by Yoriichi.
Kokushibo bisects Yoriichi's corpse in anger and jealousy.
Kokushibo cries after remembering Yoriichi's love for him.
Kokushibo questions his existence as he passes away.