Chapter Summaries

Tengen Uzui, Kanao, and Inosuke fought Doma while Tengen studied the demon’s attacks. Haruto appeared at the last moment, cut off Doma’s arm, and nearly bisected him, leaving Doma eager to fight him again.

• Doma recognized Kanao’s Breathing Style lineage and attacked Tengen Uzui with ice crystals and Frost Powder.
• Tengen warned the others to hold their breath, then used gunpowder balls to create openings for himself and Inosuke to attack from both sides.
• Doma trapped their blades with ice-covered vines, but Tengen’s explosives and Kanao’s blade freed Inosuke.
• Doma snatched Inosuke’s Wild Boar’s Head Mask and taunted him, but an unseen attacker severed Doma’s arm and cut through his body.
• Haruto caught the falling mask and flashed away through Doma’s Frost Powder as Doma recognized him and welcomed another fight.

Haruto returned alive and joined Tengen Uzui and Inosuke against Doma, whose ice Blood Demon Arts made him difficult to approach. Doma then revealed that Inosuke’s mother had once brought him to the Eternal Paradise Cult and that he had killed her after she discovered his murders.

• Haruto returned, gave Inosuke his boar mask, and told Tengen Uzui that he and the Master had survived.
• Haruto and Tengen Uzui attacked Doma, who used Frosty White Princess and Winter Icicles to keep the swordsmen at bay.
• Doma remembered a young woman who had come to his cult with a baby about fifteen years earlier and said she looked like Inosuke.
• Doma explained that the woman had tried to flee and report him after discovering he ate people, so he killed her.

Inosuke learned that Doma had killed his mother and charged at him alongside Haruto, Kanao, and Tengen Uzui. After Cang Kong announced Akaza’s death, Doma stopped treating the fight as a game, and Haruto pierced his throat, leaving Doma unsettled by the threat to his survival.

• Doma mocked Inosuke’s mother, and Inosuke realized that the woman who had once held him was real before vowing to avenge her.
• Inosuke launched an attack on Doma while Haruto and Tengen Uzui destroyed the ice maidens protecting him.
• Haruto studied Doma’s blood flow and looked for a way to exploit the demon’s arrogance.
• Cang Kong announced that Akaza had been slain, and Doma reacted with a tearful performance before deciding to end the fight quickly.
• Haruto dodged Doma’s fan and drove his sword through Doma’s throat, making Doma feel uncertain about surviving.

Tengen Uzui, Haruto, Inosuke, and Kanao worked together to decapitate Doma. As Doma died, he witnessed Akaza reunite with Koyuki and remained bewildered by their love.

• Tengen Uzui struck at Doma while Haruto held Doma's sword in place, and Kanao and Inosuke joined the attack.
• Inosuke dislocated and extended his arm to drive his blade against Haruto's, helping spin Doma's head from his body.
• As he disintegrated, Doma realized the four Demon Slayers had avoided his blood frost powder and wondered why he had lost.
• Doma saw Akaza reunite with Koyuki, who comforted him and promised to accompany him to hell.
• Doma watched Akaza and Koyuki disappear together and wondered about their relationship and the love he had never felt.

Doma reflected on his life, from his childhood in the Eternal Paradise Cult to his transformation into a demon and his death. As he headed toward Hell, he felt loneliness for the first time.

• Doma discovered that his parents exploited the Eternal Paradise Cult, and watched his mother kill his father before taking her own life.
• Doma inherited the cult, continued exploiting its believers, and sought new sensations through drinking, smoking, and women.
• Muzan Kibutsuji recruited Doma, who became a demon and used the cult to lure women he could consume.
• Doma concluded that human emotions were useless and pretended to be lively and friendly around the other demons.
• As Doma's body crumbled, he saw Akaza walking toward Hell with someone and felt lonely for the first time.
• A voice told Doma that the women he had eaten had gone to Heaven, leaving him to go to Hell alone.

After Doma’s death, Inosuke grieved over learning the truth about his mother, while Haruto comforted him. The Infinity Castle shifted and separated the group, but Haruto caught Murata and Tanjiro, who told him they had defeated Akaza and that Tanjiro had entered the Transparent World.

• Inosuke crushed Doma’s vanishing head and cried as he worried that his mother would be disappointed in him.
• Haruto reassured Inosuke that his mother had loved him and was likely watching over him, and the group prepared to search for Muzan.
• The Infinity Castle shifted, separating Haruto from Inosuke, Tengen Uzui, and Kanao as Yushiro struggled to control Nakime.
• Haruto caught Murata and helped him save the wounded Tanjiro as they slid through a corridor.
• Tanjiro told Haruto that he, Giyu, and Kyojuro had defeated Akaza, and explained how he entered the Transparent World by tracking Akaza’s movements.

Muichiro Tokito discovered that Upper Rank One was Tsugikuni Michikatsu, his ancestor and a former Demon Slayer who had become a demon. Michikatsu pinned Muichiro and attacked Genya, but two white-haired figures arrived just as Genya was about to be cut in half.

• Upper Rank One asked Muichiro Tokito his name, identified him as a descendant of the Tsugikuni family, and revealed that he had once been Tsugikuni Michikatsu.
• Muichiro attacked Michikatsu with Mist Breathing, rejected his offer to become a demon, and learned that Michikatsu used Moon Breathing.
• Genya fired his Double-Barreled Musket at Michikatsu, who dislocated Muichiro’s sword hand and pinned him to a pillar with his Nichirin Blade.
• Michikatsu cut off Genya’s hands and one arm as Muichiro struggled to free himself and shouted for Genya to run.
• Two white-haired figures appeared and challenged Michikatsu as he prepared to cut Genya in half.

Haruto and Sanemi fought Kokushibo while Tanjiro helped Genya recover from losing both arms. Kokushibo revealed a more dangerous attack, and Sanemi survived its crossing slashes because Haruto warned him in time and Genya’s blood began healing him.

• Haruto arrived as Kokushibo prepared to cut Genya in half and struck Kokushibo’s bone sword, with Sanemi joining the fight moments later.
• Tanjiro helped Genya reattach his severed arms, and Genya used a talisman to turn invisible and move toward the fight.
• Haruto and Sanemi coordinated their attacks against Kokushibo, who praised their skill and used Moon Breathing, Third Form: Loathsome Moon: Erosion.
• Haruto mocked Kokushibo’s measured speech, then warned Sanemi to retreat when Kokushibo launched two crossing slashes.
• Sanemi retreated with severe chest injuries, and Genya’s blood began healing him through the Demonization Potion.

Haruto, Tanjiro, and the Hashira fought Kokushibo in the Infinity Castle as his memories of Yoriichi stirred at the sight of Tanjiro’s Sun Breathing. Kokushibo transformed his sword and unleashed a devastating attack, leaving Haruto badly wounded as the battle continued.

• Kokushibo praised Haruto’s swordsmanship and suggested he could join the demons, while Haruto said Muzan likely wanted him dead.
• Tanjiro’s Sunflower Earrings and Sun Breathing reminded Kokushibo of Yoriichi, and Kokushibo attacked Tanjiro with Moon Breathing.
• Haruto and Tanjiro countered Kokushibo together with Star Breathing and Sun Breathing as Genya rescued Muichiro and Sanemi protected them from the clash.
• Gyomei arrived and ordered Genya and Muichiro to withdraw for treatment while the Hashira continued fighting Kokushibo.
• Kokushibo’s sword transformed, and his Moon Breathing attack wounded Haruto badly when he shielded Tanjiro.

Haruto awakened his Demon Slayer Mark while fighting Kokushibo and trapped Upper Rank One with a new Star Breathing technique. Sanemi also awakened his mark, and the two turned their Nichirin Blades bright red before the four swordsmen attacked Kokushibo.

• Haruto endured Kokushibo's Moon Breathing attack and decided to awaken his Demon Slayer Mark despite the risks.
• Haruto awakened a star-shaped Demon Slayer Mark and used Star Breathing's Eighth Form, Big Dipper · Army Breaker, to temporarily trap Kokushibo.
• Haruto called for the others to cut off Kokushibo's head, and Sanemi revealed that he had awakened his own Demon Slayer Mark.
• Haruto and Sanemi clashed their Nichirin Blades and used their grip strength to turn both swords bright red.
• Haruto, Sanemi, Gyomei Himejima, and Tanjiro attacked Kokushibo as he wondered how swordsmen who did not use Sun Breathing could turn their blades red.

Kokushibo was overwhelmed by Sanemi, Tanjiro, Takanashi, and Haruto, whose attacks prevented him from regenerating and left him facing death. He remembered how fear of the marked swordsmen’s early deaths and envy of Yoriichi had driven him to become a demon and betray the Demon Slayer Corps.

• Michikatsu recalled how Yoriichi’s Sun Breathing and Bright Red Nichirin Sword had kept him in his younger brother’s shadow, while he mastered Moon Breathing and became the strongest swordsman after Yoriichi’s death.
• Sanemi and Tanjiro attacked Kokushibo with Wind and Sun Breathing as Haruto and the other swordsmen pressed forward, refusing to retreat from his Moon-Sickle Vortex.
• Tanjiro’s blade cut off Kokushibo’s hand, Takanashi’s blade weakened his regeneration, and a Stone Breathing strike pulverized his head and neck.
• As his body failed to regenerate, Kokushibo wondered how he could die despite being the strongest demon beneath Muzan and Yoriichi’s older brother.
• Michikatsu asked Yoriichi whether he had found a successor for Sun Breathing, but Yoriichi calmly told him that more gifted people would be born after them.
• Fearing the marked swordsmen’s curse as he neared twenty-five, Michikatsu accepted Muzan’s offer, became Kokushibo, and betrayed the Demon Slayer Corps by killing the Ubuyashiki master.

Kokushibo regenerated after decapitation and transformed into a grotesque new life-form, forcing the swordsmen to keep fighting. Haruto tried to inject him with the Dream Thief Drug, but Kokushibo pierced him and turned his spikes on the others as a voice called him a pitiful brother.

• Kokushibo began regenerating his head, and Sanemi, Tanjiro, Gyomei Himejima, and Haruto attacked him together.
• Kokushibo shielded himself with Moon Breathing, Fifth Form: Moon-Sickle Vortex, then transformed into a monstrous form with horns, spikes, and armored growths.
• Haruto remembered the Dream Thief Drug, lunged at Kokushibo, and drove a syringe into one of his eyes after his blade failed to pierce Kokushibo's neck.
• Kokushibo impaled Haruto with a spike from his back and extended his spikes toward the other swordsmen.
• Kokushibo declared that he would never lose again, and a voice called him a pitiful brother.

Kokushibo heard Yoriichi Tsugikuni’s voice and relived the centuries-old jealousy and hatred that grew from their childhood rivalry and Yoriichi’s unmatched talent. As Kokushibo collapsed before Yoriichi’s image, his brother told him that every path pursued to its utmost reached the same destination, and that Kokushibo’s view of the world was vivid in its own right.

• Kokushibo recognized Yoriichi’s voice and recalled how Yoriichi defeated him with one strike before dying on the Blood Moon Night four hundred years earlier.
• Kokushibo remembered their childhood, when Yoriichi’s first sword practice revealed extraordinary talent and their father made him heir instead of Michikatsu.
• Kokushibo recalled how Yoriichi’s indifference to swordsmanship made his own jealousy and hatred grow.
• Kokushibo accused Yoriichi of mocking him and begged for another chance to defeat him and see the world through his eyes.
• Yoriichi told Kokushibo that those who pursued their paths to the limit reached the same destination and that Kokushibo’s world was vivid too.

Haruto and the Demon Slayers defeated Kokushibo, whose resolve collapsed after he confronted his own monstrous appearance and spoke with Yoriichi. As Tanjiro carried Haruto toward treatment, the Infinity Castle began rising, and Haruto suspected Yushiro had taken control of Nakime's Blood Demon Art to bring it into the sunlight.

• Haruto urged Tanjiro and the Hashira to finish Kokushibo quickly, then watched as Sanemi and Gyomei attacked while Kokushibo reflected on his life and Yoriichi.
• Kokushibo's head was destroyed, and he crumbled to ash after admitting he had wanted to become like his younger brother.
• Gyomei stopped Sanemi from continuing to attack, then told Tanjiro to carry the badly wounded Haruto upward while he and Sanemi pressed on toward Muzan.
• Tanjiro carried Haruto through the shifting Infinity Castle and promised to get him to Shinobu for treatment, but Yushiro did not answer their communication talisman.
• The Infinity Castle began to shake and rise, and Haruto suspected Yushiro had defeated Nakime and was using her Blood Demon Art to pull the castle toward sunlight.

As the Infinity Castle emerged into the open, Kagaya ordered the Hashira to find Muzan and sent Haruto for medical treatment. Tanjiro carried Haruto to Shinobu, who bandaged his wounds while the Corps prepared for the final battle.

• Kagaya learned that the Upper Ranks had been eliminated, ordered the Hashira to search for Muzan, and told the Swordsmen to clear the castle without going deep inside.
• Yushiro raised the Infinity Castle out of the ground, exposing it beneath the night sky.
• Tanjiro carried the injured Haruto toward the medics, while Yushiro searched a demon for Muzan's location.
• Shinobu treated Haruto's wounds with Tamayo's medicine, and Kanae learned that Kanao had survived after killing Doma.
• Shinobu urged Haruto to take care of himself, and he promised they would still visit Mount Fuji together.

Obanai Iguro and Mitsuri Kanroji found Muzan recovering inside a ball of flesh in the Infinity Castle and attacked, but he emerged with overwhelming power and rapid regeneration. Sabito and Makomo arrived to save them as Muzan realized Nakime had lost control of the castle.

• Obanai Iguro and Mitsuri Kanroji followed the strongest energy pulses to the center of the Infinity Castle and found Muzan enclosed in a pulsing ball of flesh.
• Obanai Iguro alerted the Corps, then used Serpent Breathing to cut the flesh strands and slash the ball open.
• Muzan emerged in a monstrous form and attacked Obanai Iguro, but Mitsuri Kanroji pulled him out of danger with her flexible blade.
• Sabito struck Muzan while Makomo pulled Obanai Iguro and Mitsuri Kanroji to safety, but Muzan healed his wound instantly.
• Muzan realized Nakime had lost control of the Infinity Castle and condemned her as he crushed someone's head.

Haruto and the Hashira reached Muzan for the final battle, with an hour and a half until sunrise. As the swordsmen attacked, Haruto turned his Nichirin Blade bright red and tried to close in on Muzan.

• Haruto and Tanjiro raced through the fallen Infinity Castle toward Muzan, where Obanai, Kanroji, and the Hashira had gathered.
• Muzan struck Giyu with a blood-filled tentacle, and Lady Tamayo injected him with a serum that broke down the toxin.
• Tengen Uzui, Sanemi Shinazugawa, Haruto, and the other fighters confronted Muzan, who defended his actions as the law of nature.
• Sanemi Shinazugawa charged with Wind Breathing, and Haruto crossed blades with him to turn both Nichirin Swords bright red.
• Haruto dodged Muzan's whips and heated his own red blade as he tried to close the distance.

Haruto fought Muzan with Gyomei but hesitated when Muzan asked what drove his hatred, allowing a thorn to pierce his chest. He woke in a seemingly altered reality where his body was weak and Murata told him that several people he knew had died, leaving Haruto unsure whether he was dreaming or had lost his mind.

• Haruto saw Muzan's organs through the Transparent World and attacked alongside Gyomei, using Star Breathing's Eighth Form.
• Muzan questioned Haruto's hatred, and Haruto's hesitation let Muzan's thorns pierce his chest.
• Haruto woke to Murata shaking him and found his body weak beside the ruined Infinity Castle and nearby houses.
• Murata told Haruto that Genya had died fighting Upper One and that Shinobu Kocho had died fighting Upper Two.
• Murata said Giyu was fighting Muzan, did not recognize Sabito's name, and explained that the Master had died and Kiriya Ubuyashiki was commanding the battle.

Haruto woke from a vision of a world where the Demon Slayer Corps faced Muzan without him, then returned to the battle and renewed his resolve to kill Muzan. Tamayo’s aging drug weakened Muzan, while Gyomei and Kyojuro activated their demon slayer marks and intensified the assault.

• Haruto saw a vision of Giyu, Tanjiro, and the Hashira fighting a desperate battle against Muzan in a world without him.
• Haruto awoke after Tamayo cleared the poisonous blood from his body and learned that Genya was seeking Muzan’s flesh and blood.
• Haruto rejoined the battle and swore he would keep hunting Muzan until he was dead.
• Gyomei activated his demon slayer mark, strengthened his weapons, and smashed a hole through Muzan’s chest with his Meteor Hammer.
• Kyojuro activated his demon slayer mark and joined the assault as Tamayo revealed that her drug was aging Muzan by fifty years each minute.
• Haruto noticed Muzan had slowed and turned white-haired, while Muzan realized the Demon Slayer Corps and Tamayo had altered his body.

Haruto and the Hashira pressed Muzan as his aging body struggled to regenerate, while the younger slayers attacked from the shadows. As Muzan’s strength waned, Haruto noticed old, crisscrossing blade scars emerging across his body.

• Haruto and Gyomei Himejima agreed they had to hold Muzan in place until sunrise.
• Haruto used the Transparent World to see Muzan’s five brains and seven hearts, then fought through his thorns and cut off an arm containing a heart.
• Obanai Iguro awakened his Demon Slayer Mark and warned Haruto that Muzan’s body was near its limit.
• Inosuke and the other young slayers attacked Muzan from the darkness, but Muzan redirected his thorns and exposed Zenitsu.
• Haruto noticed old blade scars spreading across Muzan’s body as his energy failed to keep pace with his regeneration.