Chapter Summaries

Tanjiro returned to fight Tetsuzan while Kanao remained trapped by Miyako, and the demons quickly overwhelmed them both. As Tanjiro rose from his injuries with a sudden boost in strength, he discovered a way to cut through Tetsuzan’s enlarged body, but pain interrupted his strike before he could kill him.

• Tetsuzan told Miyako to restrain Kanao while he fought Tanjiro, and Miyako agreed.
• Tanjiro’s Water Breathing slashes barely injured Tetsuzan, who punched him through a tree.
• Kyojuro tried to intervene, but Yoru Machi held him back and said Tanjiro had not yet reached his limit.
• Tanjiro stood again, saw white lines around Tetsuzan, and charged despite his broken bones.
• Tanjiro’s Surface Slash severed Tetsuzan’s enlarged arm, but pain stalled his follow-up and let Tetsuzan escape the killing blow.

Tanjiro unlocked a rudimentary form of the Clear World and used it to defeat Miyako, freeing Kanao. Kanao then killed Tetsuzan as Tanjiro lost consciousness.

• Yoru Machi recognized that Tanjiro had begun to see demons’ weak points, while Kyojuro watched in amazement.
• Tanjiro decided the Rock Demon had more weak points than Tetsuzan and rushed past him to attack Miyako.
• Tanjiro cut Miyako in half with Water Breathing, Second Form: Water Wheel, and Kanao caught him as he fell unconscious.
• Tetsuzan charged at Kanao and Tanjiro, but Kanao killed him with Flower Breathing, Fifth Form: Peonies of Futility.
• As Tetsuzan turned to ash, he realized Miyako had always been protecting him.

After the Final Selection ended, Yoru Machi treated Tanjiro and announced the recruits’ ranks and placements. Genya challenged his fourth-place ranking, so Yoru Machi approached the newcomers while releasing a terrifying killing intent.

• Kanao stayed beside the unconscious Tanjiro after killing the Growth Demon, and Yoru Machi healed him when he woke.
• Yoru Machi announced that the first five recruits would begin at Kanoe rank, while the other three survivors received provisional Mizunoto rank.
• Yoru Machi ranked Kanao first, Tanjiro second, Inosuke third, Genya fourth, and Zenitsu fifth.
• Inosuke silently resolved to challenge Kanao and Tanjiro, while Genya loudly questioned the rankings.
• Yoru Machi explained that the rankings reflected strength, performance, and character, then released his killing intent as he advanced toward the newcomers.

Yoru Machi demonstrated his strength and explained the Final Selection rankings to the new Demon Slayers before agreeing to help Tanjiro's unconscious sister, Nezuko. At Mount Sagiri, he concluded that Nezuko had fallen unconscious from lack of energy and used Reiryoku to sustain her temporarily, though curing her would require confronting Muzan Kibutsuji.

• Yoru Machi caught Zenitsu Agatsuma's Flash of Lightning between two fingers, knocked him unconscious, and explained why he had ranked fifth.
• Yoru Machi challenged Genya Shinazugawa over his fear and warned that consuming Maneating Demons could cause a backlash, leaving Genya stunned.
• Yoru Machi assessed Inosuke, Tanjiro, and Kanao, then had the Ubuyashiki twins arrange Nichirin Blade selections and promised the recruits their uniforms and blades in half a month.
• Tanjiro asked Yoru Machi to examine Nezuko, and Yoru Machi returned with him to Mount Sagiri after the recruits received their equipment and Kasugai Crows.
• Yoru Machi diagnosed Nezuko's unconsciousness as an energy shortage, injected Reiryoku to sustain her and suppress her cravings, and said curing her would likely require starting with Muzan Kibutsuji.

Nezuko awoke and treated Yoru Machi as her little brother, while Tanjiro received his first mission to investigate missing girls. When Tanjiro and Nezuko were trapped fighting three Swamp Demons, Yoru Machi set out to find them and reached an alley where he prepared to use White Lightning.

• Nezuko woke and stroked Yoru Machi's head because Urokodaki's suggestion made her see him as her little brother.
• Tanjiro received a mission to investigate girls disappearing in a northwestern town, and Yoru Machi traveled there with him but refused to intervene in his training.
• Tanjiro found the three Swamp Demons and fought them while protecting hostages, but two demons dragged Nezuko into their swamp and Tanjiro followed her.
• After the Night Crow reported the siblings' predicament, Yoru Machi tracked the demons to a dim alley where an unconscious girl and a bewildered man were present.
• Yoru Machi raised his hand as white lightning gathered and called out Hadō #4: White Lightning.

Yoru Machi helped Tanjiro and Nezuko defeat the Swamp Demons, then discovered Muzan Kibutsuji hiding in Asakusa and assigned Tanjiro a plan to lure him away from the crowds. Tanjiro recognized the demon who had slaughtered his family and approached him with his hand on his Nichirin Blade.

• Yoru Machi used White Lightning to free Nezuko from a Swamp Demon, and she kicked it while Tanjiro defeated the other two.
• Tanjiro killed the remaining Swamp Demon after it refused to reveal information about Muzan Kibutsuji.
• Yoru Machi sensed Muzan Kibutsuji in Asakusa and ordered Tanjiro to help lure him away from the crowded town, with Nezuko as bait.
• Tanjiro accepted the plan and headed toward Yoru Machi's target with Nezuko.
• Tanjiro recognized the scent of the demon who had slaughtered his family and gripped his Nichirin Blade.

Tanjiro restrained his urge to attack Muzan Kibutsuji in a crowded district, while Yoru Machi used the siblings to draw Muzan into an alley. Yoru Machi confronted Muzan alone and revealed that he had recognized him from their encounter two years earlier.

• Tanjiro calmed himself, then walked past Muzan with Nezuko rather than risk harming bystanders.
• Muzan noticed that Nezuko was a Maneating Demon and sent Susamaru and Yahaba to capture the Tanjiro siblings alive.
• Muzan killed three drunkards who insulted him, then encountered Yoru Machi in the alley.
• Yoru Machi admitted that the siblings had been bait and mocked Muzan for his caution.
• Yoru Machi explained that he had sensed Muzan two years earlier, and Muzan realized Yoru Machi had a dangerous sensory ability.

Muzan Kibutsuji tried to persuade Yoru Machi to leave him alone by offering protection for Night Crow Village, freedom to slay other demons, and eventual immortality. Yoru Machi rejected the offer and attacked, and their battle escalated as Muzan transformed and Yoru Machi used Spirit Vision to seek his weaknesses.

• Muzan Kibutsuji recognized Yoru Machi as a greater threat than Yoriichi Tsugikuni and proposed a deal to keep him from pursuing Muzan.
• Yoru Machi ignored Muzan's offer and appeared before him with Shunpo, severing one of his arms.
• Muzan reshaped the severed arm into a thorned whip and swept it across the alley, while Yoru Machi blocked the attack with his Nichirin Blade.
• Yoru Machi struck Muzan with Hadō #4: White Lightning, blowing apart his head, but Muzan regenerated and transformed into his full demon form.
• Yoru Machi activated Spirit Breathing, Seventh Form: Spirit Vision, and saw weaknesses on Muzan's transformed body.

Yoru Machi fought Muzan Kibutsuji in a narrow alley, unleashing a powerful ranged slash that met Muzan’s counterattack in a destructive blast. After learning that the fighter was Yoru Machi, Tamayo realized that a swordsman comparable to Yoriichi Tsugikuni had appeared and could be the rival she needed to defeat Muzan.

• Yoru Machi struck one of Muzan Kibutsuji’s weaknesses with White Lightning, but the weakness vanished and Muzan survived.
• Yoru Machi used Spirit Breathing—Second Form: Getsuga Tensho to sever Muzan’s whip-like tubes and carve a trench through the alley.
• Muzan Kibutsuji wrapped himself in his tubes and countered Getsuga Tensho with a shockwave, causing a blast that leveled nearby buildings and sent Asakusa’s residents fleeing.
• Tanjiro and his companions recognized the distant pillars of light as the site of Yoru Machi’s battle with Muzan Kibutsuji.
• Tamayo asked Tanjiro whether Yoru Machi was the senior fighting Muzan, then recognized him as a potential rival capable of helping her defeat Muzan.

Tamayo hurried to the battlefield with Tanjiro and medicine that could suppress Muzan Kibutsuji’s demonic power, while explaining Muzan’s many organs and ability to escape by splitting apart. Muzan transformed and unleashed a shockwave and newly created demons, and Yoru Machi cut through the threats before awakening his spiritual pressure and strange markings.

• Tamayo packed her medicines, brought Yushiro and the exhausted Tanjiro, and headed toward Yoru Machi’s battle with Muzan Kibutsuji.
• Tamayo told Tanjiro about Muzan’s multiple brains and hearts, his ability to split into eighteen hundred fragments, and her plan to use medicine to turn him human again.
• Muzan transformed into a gigantic monster, killing Asakusa residents with his roar and bloody thorns before creating hundreds of powerful Maneating Demons.
• Yoru Machi used Spirit Breathing—Fifth Form: Mad Butterfly to shred Muzan’s whips and the approaching demons.
• Yoru Machi released his spiritual pressure, and black markings appeared on his skin as his body temperature rose.

Yoru Machi activated his Spirit Marks and overwhelmed Muzan Kibutsuji, cutting him in half before using Hadō to engulf him in azure flames. Muzan remained alive after being severed, and Yoru Machi attempted to burn his body to ash.

• Yoru Machi's Markings spread across his body and face, glowing blue as they consumed Reiryoku to fuel his power.
• Yoru Machi charged through Muzan Kibutsuji's Maneating Demons and tentacles, cutting down the demons in his way while Tanjiro watched in awe.
• Yoru Machi reached Muzan Kibutsuji and slashed him in half, then seized his upper body as it remained alive.
• Yoru Machi began chanting and unleashed Hadō #73: Twin Lotus Azure Flame Fall, engulfing Muzan Kibutsuji and the surrounding street in azure flames.

Yoru Machi burned Muzan Kibutsuji’s upper body and restrained his lower half, but Muzan escaped by splitting into fragments and unleashing a demon outbreak in Asakusa. After the Demon Slayer Corps’ Pillars helped contain the demons, Sanemi Shinazugawa moved to attack Nezuko, and Tanjiro and Giyu Tomioka intervened.

• Tamayo warned Yoru Machi that Muzan Kibutsuji could survive unless his multiple brains and hearts were destroyed, while Muzan’s lower half fled toward Asakusa’s crowds.
• Yoru Machi bound Muzan with Chain Binding, and Kagaya Ubuyashiki sent the available Court Pillars to Asakusa.
• Muzan threatened Yagami Yoru Castle and escaped by splitting himself into fragments, with over a hundred pieces getting away.
• Muzan’s flesh fragments empowered infected Maneating Demons, so Yoru Machi gave up the chase and surrounded them with an azure flame barrier.
• Yoru Machi and the Court Pillars hunted the trapped demons through the night until nearly all were eliminated by dawn.
• Sanemi Shinazugawa tried to kill Nezuko and the other Maneating Demons with Tanjiro, but Giyu Tomioka stepped in to stop him.

The Pillars debated whether Nezuko and Tamayo could be trusted, while Yoru Machi vouched that Nezuko was unlike other demons. Kagaya Ubuyashiki arrived in Asakusa and proposed a vote on Nezuko’s fate, leaving the decision unresolved.

• Sanemi Shinazugawa confronted Giyu Tomioka for protecting Nezuko and Tamayo, and Tanjiro and Yoru Machi testified that Nezuko had never consumed human blood or flesh.
• Nezuko comforted the weakened Yoru Machi, leaving the Pillars stunned and helping them understand why he considered her different from other demons.
• Kagaya Ubuyashiki came to Asakusa, established a temporary Demon Slayer Corps base, and heard Yoru Machi explain that Muzan Kibutsuji would need centuries to recover from his injuries.
• Sanemi Shinazugawa exposed his Rare Blood to test the demons; Yushiro knocked himself unconscious, while Yoru Machi’s stored Reiryoku calmed Nezuko.
• Kagaya Ubuyashiki proposed putting Nezuko’s fate to a vote because Yoru Machi and Giyu Tomioka vouched for her.

Kagaya Ubuyashiki sided with Nezuko, settling the Pillar meeting in her favor while the wounded Muzan Kibutsuji fled to the Infinite Castle. After realizing that Yoru Machi’s head was the Blue Spider Lily he had sought for centuries, Muzan began planning to recover and kill the Demon Slayer Corps’ Pillars.

• Kagaya Ubuyashiki voted to accept Nezuko, and Sanemi Shinazugawa reluctantly accepted the meeting’s decision.
• Muzan Kibutsuji escaped to the Infinite Castle and ordered Nakime to summon the Twelve Kizuki so they could gather humans for him to consume.
• Muzan Kibutsuji recalled his long search for the Blue Spider Lily and concluded that Yoru Machi’s head could help him overcome sunlight and his craving for human flesh and blood.
• Muzan Kibutsuji planned to recover, eliminate Demon Slayer Corps members, and eventually take Yoru Machi’s head with help from the Twelve Kizuki.
• Muzan Kibutsuji killed Lower Moon One, Lower Moon Three, and Lower Moon Four after they showed fear or begged for greater power.

After the Twelve Kizuki meeting, Rui became Lower Rank One and returned to Mount Natagumo with more of Muzan Kibutsuji’s blood. He offered his four coerced family members a chance to become Lower Rank Five by competing to capture the most humans alive.

• Muzan Kibutsuji rejected the three Lower Moons’ demands, then ordered the demons to capture humans and Demon Slayer Corps members and warned them to flee if they encountered Yoru Machi.
• Akaza welcomed the thought of fighting Yoru Machi, while Rui cared only about returning to his family on Spider Mountain.
• Muzan promoted Rui to Lower Rank One, gave him more blood, and authorized him to appoint a Lower Rank Five.
• Rui returned to Mount Natagumo, where his parents and siblings feared him; the supposed family was held together by his strength and abuse.
• Rui announced a competition in which the family member who captured the most humans alive would receive the Lower Rank Five title, and they saw it as a chance to escape his control.

Rui fought Tanjiro, Zenitsu, and Inosuke on Spider Mountain, but Nezuko emerged from Tanjiro’s box and helped her brother resist Rui’s attempt to claim her as family. Elsewhere on the mountain, Yoru Machi pinned Spider Mom down while Tamayo and Shinobu Kocho watched, leaving Spider Mom fearing that no one would rescue her.

• Rui personally attacked Tanjiro, Zenitsu, and Inosuke, overpowering them with his strength as Lower Rank One.
• Nezuko kicked Rui in the face as she emerged from Tanjiro’s wooden box, then took a fighting stance to protect Tanjiro.
• Rui tried to recruit Nezuko and make her his family, but she rejected him and chose to stand by Tanjiro.
• Tanjiro headbutted Rui while bound in Spider Silk, and Nezuko used her Blood Burst Technique to free Tanjiro and the others.
• Yoru Machi pinned Spider Mom down as Tamayo and Shinobu Kocho watched, and Spider Mom cried out for help.

Yoru Machi, Shinobu, and Tamayo captured Spider Mom and tested Tamayo’s medicine on her. When Spider Mom began to show unusual symptoms, Yoru Machi denied suspecting anything strange and insisted he was a gentleman.

• Spider Mom attacked Yoru Machi, Shinobu, and Tamayo in the forest, hoping to raise her standing and escape her demon family.
• Yoru Machi defeated and pinned Spider Mom while Shinobu and Tamayo prepared to use her as a test subject.
• Spider Mom begged them not to inject her, but Tamayo and Shinobu gave her a dose of medicine.
• Spider Mom’s body grew numb and warm as her heartbeat quickened, prompting Yoru Machi to ask Tamayo what the medicine was doing.
• Tamayo explained the symptoms as signs of blood circulation and transformation, while Yoru Machi denied having any strange thoughts and called himself a gentleman.

Tamayo’s experimental drug turned Spider Mom back into a human, but its slow effect left her unsure it could work on Muzan Kibutsuji. As Yoru Machi and Shinobu Kocho considered what to do with Spider Mom, Spider Sister arrived and offered herself as another test subject.

• Tamayo, Yoru Machi, and Shinobu Kocho went to Spider Mountain after the Demon Slayer Corps members there lost contact.
• Tamayo injected Spider Mom with her drug, and Spider Mom returned to human form.
• Tamayo judged the drug too slow to work reliably on Muzan Kibutsuji and asked Yoru Machi to find another Maneating Demon to test.
• Spider Mom said she had never killed anyone and offered to lead the group to the captives she had kept alive.
• Spider Sister descended on Spider Silk and declared that she would take over the group's prey and serve as a test subject.

Yoru Machi, Tamayo, and Shinobu Kocho subdued Spider Sister and Tamayo turned her back into a human, stripping away her demonic power. After learning about the other demons on Spider Mountain, they split up, with Spider Mom choosing to guide Yoru Machi to the captives.

• Spider Sister attacked Yoru Machi, Tamayo, and Shinobu Kocho, but Yoru Machi quickly pinned her down.
• Tamayo used a larger dose of her treatment to turn Spider Sister into a powerless human, and the group left her behind because she had killed many people.
• Tamayo questioned Spider Mom about the remaining demons on Spider Mountain, and Spider Mom revealed everything she knew.
• Yoru Machi proposed splitting up so Tamayo and Shinobu Kocho could find demons to use as test subjects while he rescued the captives.
• Spider Mom volunteered to guide Yoru Machi to the captured people, deciding she would rather accompany him than Tamayo and Shinobu Kocho.

Yoru Machi rescued captives on Spider Mountain and reassured Spider Mom that he only wanted to study her unusual body. After he left to continue the rescue, Demon Slayer Corps members misunderstood their conversation and spread another rumor about his lustfulness.

• Spider Mom freed the captives from their cocoons, and Yoru Machi wondered how she could still use Blood Demon Art after becoming human.
• Yoru Machi told Spider Mom he wanted to collect samples from her but would not harm her, and she accepted that the Corps would likely keep her under surveillance.
• Yoru Machi checked that the rescued people were unharmed, sent them down the mountain with Demon Slayer Corps members, and took Spider Mom to continue the rescue.
• The rescued slayers misinterpreted Yoru Machi and Spider Mom's conversation as evidence of his sexual exploits, while a newcomer questioned their assumptions.
• The veterans defended Yoru Machi's reputation as a popular, handsome, and powerful bachelor, and the newcomer began to suspect that his beloved senior sister admired him too.