Chapter Summaries

Moyu, Tanjiro, and Zenitsu entered a drum-shifting mansion to rescue a boy taken by the Drum Demon, Kyogai. The demon’s Blood Demon Art separated them, and Moyu prepared to hunt the mansion’s lesser demons before confronting Kyogai.

• Zenitsu asked Tanjiro about the box on his back, and Tanjiro warned him never to open it.
• The group heard drumming and followed the demon’s scent to an old mansion, where Teruko begged them to rescue her brother, A Qing.
• Moyu warned that the mansion’s spatial manipulation might separate them, then Tanjiro and Moyu entered with Shoichi while Zenitsu reluctantly followed.
• A drum sounded inside the mansion and warped the space, scattering Moyu into an unfamiliar corridor.
• Moyu sensed lesser demons approaching, hid in the corridor’s shadows, and prepared to hunt them for samples.

Zenitsu protected Shoichi from five Demon Servants until fear made him collapse, then awakened and killed three with Thunderclap and Flash. Tanjiro rescued A Qing, while Moyu reached Kyogai’s room and confronted the demon.

• Zenitsu and Shoichi were separated from Tanjiro and Moyu, and Zenitsu led Shoichi through the mansion while searching for A Qing.
• Five Demon Servants cornered Zenitsu and Shoichi, and Zenitsu collapsed after being wounded and overwhelmed by fear.
• Zenitsu sprang up with his eyes closed, used Thunderclap and Flash to kill three demons, and turned toward the two survivors.
• Tanjiro found A Qing surrounded by Demon Servants, slew them, freed A Qing, and said they needed to find the demon behind the drumming.
• Moyu followed the mansion’s spatial fluctuations to Kyogai’s room, kicked open the door, and declared that he would take Kyogai’s blood.

Moyu defeated former Lower Rank Six Kyogai by analyzing and countering his spatial Blood Demon Art, then escaped the collapsing Drum Mansion with Tanjiro. Outside, Inosuke attacked Zenitsu over Nezuko’s box, and Moyu broke Inosuke’s ribs and warned him not to attack a fellow Demon Slayer again.

• Kyogai distorted the Drum Mansion with his drums, while Moyu dodged the shifting rooms and studied the Blood Demon Art.
• Inosuke burst into the room and charged at Moyu, who repelled him through a wall and into the clearing outside.
• Tanjiro arrived carrying A Qing, and Moyu sent him to find Zenitsu and lead the others out while he fought Kyogai alone.
• Moyu pierced Kyogai’s spatial defenses, shattered the energy node connecting his drums, and beheaded him.
• The Drum Mansion began collapsing, and Moyu pulled Tanjiro to safety just before the building crumbled.
• Moyu found Inosuke attacking Zenitsu for guarding Nezuko’s box, kicked Inosuke hard enough to break his ribs, and warned him against harming a comrade.

At a Wisteria House, Moyu and Tanjiro’s group recovered while Tanjiro introduced Zenitsu and Inosuke to Nezuko. After healing, Inosuke challenged Moyu and lost, agreeing to follow Moyu’s tactical arrangements until their next mission.

• Moyu carried the injured Inosuke to a Wisteria House, where a doctor treated him and Zenitsu.
• Tanjiro revealed that Nezuko was his sister and a Demon who had never harmed humans, and Inosuke agreed not to hurt her.
• The group recuperated for several days as Tanjiro trained, Zenitsu fawned over Nezuko, and Inosuke resumed training.
• Inosuke formally challenged Moyu to a duel using only swordsmanship and Breathing Styles, wagering that the loser would honor the winner’s terms.
• Moyu defeated Inosuke with a precise strike, and Inosuke agreed to follow Moyu’s tactical arrangements and never attack a companion again.

At the Wisteria House, Moyu sent Kyogai’s blood sample to Tamayo, then received an emergency order to investigate Mount Natagumo with Tanjiro, Zenitsu, and Inosuke. Knowing they may face Rui, Moyu steadied the group and ordered them to prepare to leave.

• Moyu dodged Inosuke’s unarmed attack, knocked him down, and advised him to work on control and technique.
• Moyu used a black cat to deliver Kyogai’s blood sample to Tamayo for her research.
• A Kasugai Crow ordered Tanjiro, Zenitsu, Inosuke, and Moyu to go to Mount Natagumo after several Demon Slayer Corps members, including Kanoe-ranked slayers, went missing.
• Moyu recognized the danger posed by Rui and his spider-like abilities, while Zenitsu panicked and Inosuke welcomed the chance to fight.
• Moyu told the others to prepare and leave in fifteen minutes, and Tanjiro secured Nezuko’s box before they set out.

Moyu raced ahead up Mount Natagumo, rescuing trapped Demon Slayer Corps members and confronting Spider Sister, one of Rui’s spies and lures. Tanjiro and Inosuke entered the mountain to catch up with Moyu, while Zenitsu remained behind to guard the rescued members.

• Moyu split from Tanjiro, Inosuke, and Zenitsu Agatsuma so he could reach the trapped members faster and leave markers for them.
• Moyu used his perception and Azure Star to free captured Demon Slayer Corps members, defeat Spider Demons, and leave survivors in safe places.
• Moyu saw through Spider Sister’s plea for help, severed her attacks and escape threads, and raised his blade after Rui ignored her cries for rescue.
• Tanjiro, Inosuke, and Zenitsu Agatsuma found Moyu’s first marker and a rescued member at the mountain entrance.
• Zenitsu stayed behind to protect the rescued member, while Tanjiro and Inosuke headed into the forest to follow Moyu.

Moyu raced through the web-covered mountain forest, rescuing trapped Demon Slayers and killing Spider Demons while Tanjiro and Inosuke struggled to follow his trail. Tanjiro and Inosuke fought Spider Father, but after he molted and grew stronger, Inosuke’s Nichirin blades broke, leaving him facing a deadly blow.

• Moyu killed Spider Sister, then used Six Eyes to locate and rescue more trapped team members, killing Demons and marking temporary shelters along the way.
• Tanjiro and Inosuke followed Moyu’s trail through the forest and fought several groups of lesser Demons before encountering Spider Father.
• Inosuke’s head-on attack failed to pierce Spider Father’s defenses, while Tanjiro managed to wound him and the two coordinated their attacks.
• Spider Father molted, increased his strength and speed, and struck Tanjiro hard enough to send him crashing through a small tree.
• Inosuke attacked Spider Father’s neck with Beast Breathing: Eighth Form: Explosive Charge, but his damaged Nichirin blades snapped against the Demon’s skin.
• Spider Father swung a massive fist at the stunned Inosuke as Tanjiro shouted for him to move, and Inosuke could only raise his arms to block.

Zenitsu Agatsuma overcame his terror long enough to enter the forest, where Spider Brother poisoned him and attacked with his Human-Faced Spiders. When Zenitsu’s consciousness gave way, he unleashed a devastating Thunderclap and Flash: Sixfold Strike, killed Spider Brother, and collapsed from the poison; a girl in a butterfly-patterned haori found him and began treating him.

• Zenitsu heard a desperate scream, fought through his fear, and entered the forest searching for Tanjiro, Moyu, and Inosuke.
• Spider Brother confronted Zenitsu and sent his Human-Faced Spiders to attack him.
• The spiders wounded and poisoned Zenitsu, and Spider Brother taunted him as his strength faded.
• After Zenitsu lost consciousness, he rose in a vacant calm and used Thunderclap and Flash: Sixfold Strike to kill Spider Brother and cut down the Human-Faced Spiders.
• Zenitsu collapsed as the poison spread, and a girl wearing a butterfly-patterned haori found him, gave him an antidote, and carried him away for treatment.

Nezuko saved Inosuke and joined Tanjiro to defeat the Spider Father, while Tanjiro unleashed Hinokami Kagura: Dance. Elsewhere, Moyu freed the controlled corps members and killed the Spider Mother, then sensed a powerful demonic aura deeper on Mount Natagumo.

• Nezuko burst from Tanjiro’s box and used Exploding Blood to deflect the Spider Father’s killing blow, saving Inosuke.
• Nezuko and Tanjiro worked together to wound the Spider Father and interrupt his attempt to molt again.
• Nezuko’s Exploding Blood stalled the Spider Father, allowing Tanjiro to kill him with Hinokami Kagura: Dance.
• Tanjiro checked Inosuke’s injuries, helped him to safety, and rested while planning to aid Moyu.
• Moyu used his Six Eyes and precise strikes to sever the Spider Mother’s control over the corps members, then killed her and moved the survivors to safety.
• Moyu sensed a vast, chilling demonic aura deeper on Mount Natagumo.

Moyu confronted Rui, Lower Rank Five, and dismantled his Blood Demon Art with Blue and Azure Flow Breathing techniques. Rui was wounded but unleashed the webs around the clearing, preparing to reveal the strength of his so-called family.

• Moyu found Rui in a clearing surrounded by webs and confronted him over his abusive, fear-based idea of family.
• Rui attacked with Thread Prison, but Moyu erased the threads with Cursed Technique Lapse: Blue and advanced through the cleared path.
• Rui trapped Moyu in Cutting Thread Cage, but Moyu disabled its threads with Mirror Dissection and his defensive field.
• Rui launched Thread Rotation, and Moyu broke through the spinning cocoon with Vortex Slash, aided by a miniature Blue.
• Moyu pierced Rui's defenses and slashed his chest, but Rui claimed Muzan's power made him undefeatable and caused the clearing's webs to writhe.

Moyu defeated Rui after Rui absorbed Mount Natagumo’s accumulated resentment to empower himself, then collected a blood sample for Tamayo. With Rui dead and the mountain’s demonic aura fading, Moyu headed toward Tanjiro and the others to help with the aftermath.

• Rui drew in the mountain’s yin energy and resentment, transforming himself and attacking Moyu with enormous Demon Claws.
• Moyu dodged Rui’s attacks while waiting for an opening and charging his strength.
• When Rui lost his balance, Moyu struck his chest with Cursed Technique Lapse—Blue: Maximum Output and annihilated his body.
• Moyu collected a blood sample from Rui’s severed head, which then turned to ash.
• Moyu sensed that Tanjiro and Inosuke were stable and that Zenitsu was moving away from the mountain, then headed to join them.

After the battle on Mount Natagumo, Giyu and Shinobu confronted Tanjiro over Nezuko, and Moyu intervened to protect them. The Master ordered Tanjiro and Nezuko brought to headquarters, and Giyu led them down the mountain.

• Moyu sensed that Tanjiro and Inosuke were stable and headed toward them while Zenitsu was carried down the mountain by the support unit.
• Giyu praised Tanjiro, then Shinobu arrived and tried to kill Nezuko in her box.
• Giyu blocked Shinobu, and Tanjiro defended Nezuko, insisting that she had never harmed a human.
• Moyu stopped Shinobu from reaching Tanjiro and promised to kill Nezuko and take his own life if she ever harmed an innocent person.
• A Kasugai Crow delivered the Master's order to bring Tanjiro and Nezuko to headquarters, so Shinobu stood down and Giyu led them away.

On the journey back from Mount Natagumo, Moyu exchanged coins for a Sage Body and Armament Haki, greatly improving his recovery and combat potential. After several days, he and the others reached Demon Slayer Corps headquarters, where the Hashira had gathered.

• Moyu spent 45,000 Coins to acquire a beginner Sage Body, which rapidly restored his stamina and energy.
• Moyu exchanged 18,000 Coins for intermediate Armament Haki and tested its hardening on his hand.
• Tanjiro recounted how he and Nezuko had joined forces to defeat Spider Father, while Inosuke lamented his broken swords.
• Moyu offered to teach Tanjiro and Inosuke a technique to strengthen their weapons and defenses.
• During the journey, Moyu practiced Armament Haki and used it to nurture his Nichirin Blade, Azure Star.
• Moyu, Tanjiro, Inosuke, and the others arrived at Demon Slayer Corps headquarters and found the Hashira gathered in the courtyard.

Moyu, Tanjiro, and Inosuke appeared before the Hashira, where Sanemi tried to attack Nezuko and Moyu stopped him with an unseen barrier. Kagaya Ubuyashiki arrived before Sanemi could escalate the confrontation and welcomed the newcomers, then turned his attention to Nezuko's box.

• Tanjiro and Inosuke entered the courtyard with Moyu and faced the Nine Hashira at the meeting.
• Sanemi accused Giyu of bringing a Demon to headquarters and moved to attack Nezuko's box despite Tanjiro's protests.
• Moyu stepped between Sanemi and Tanjiro and stopped Sanemi's attempts to grab and strike him with an invisible barrier.
• Sanemi began gathering Wind Breathing power until the announcement of Kagaya Ubuyashiki's arrival halted the confrontation.
• Kagaya arrived with Nichika Ubuyashiki and Hinaki Ubuyashiki, welcomed Tanjiro, Moyu, and Inosuke, and turned toward Nezuko's box.

At the Hashira meeting, Kagaya Ubuyashiki defended Nezuko and revealed that Tanjiro Kamado and Moyu had encountered Muzan Kibutsuji. Sanemi Shinazugawa tested Nezuko with his Marechi blood, but she resisted the temptation and bandaged his wound, leaving his certainty about Demons shaken.

• Sanemi Shinazugawa demanded that Kagaya Ubuyashiki punish Tanjiro Kamado, Giyu Tomioka, and Moyu for traveling with Nezuko, while most of the Hashira objected to the arrangement.
• Kagaya’s attendant read Sakonji Urokodaki’s letter, which said Nezuko had harmed no one for a year and pledged the lives of Urokodaki, Tanjiro, Giyu, and Moyu if she ever attacked a human.
• Kagaya revealed that Muzan Kibutsuji had appeared and was hunting Tanjiro and Moyu, prompting the Hashira to demand details before Moyu asked them to let Kagaya finish speaking.
• Sanemi cut his arm to expose Nezuko to his Marechi blood, but Moyu warned him not to touch her and carried Nezuko’s box into a dim room for the test.
• Nezuko resisted the scent of Sanemi’s blood, tore a strip from her kimono, and gently bandaged his wound instead of attacking him.
• Moyu asked whether Nezuko’s actions were enough evidence, and Sanemi stood stunned as his belief that Demons could never change began to waver.

After Nezuko proved she would not harm humans, Kagaya allowed her and Tanjiro to remain in the Demon Slayer Corps and urged them to grow strong enough to defeat the Twelve Kizuki. Moyu warned the Hashira against confronting Muzan prematurely, was named the Corps’ tenth Hashira—the Eye Hashira—and went with Shinobu to the Butterfly Mansion.

• Nezuko bandaged Sanemi’s arm, and the Hashira accepted Kagaya’s conclusion that she would not harm humans; Kagaya allowed Tanjiro and Nezuko to stay in the Corps and told them to prove themselves by defeating the Twelve Kizuki.
• Moyu offered to report on Muzan while Tanjiro and Nezuko rested, and Shinobu invited them and Moyu to the Butterfly Mansion for care.
• Moyu told the Hashira that Muzan could change his appearance and warned that confronting him with their current strength would likely end in their deaths, advising them to train and gather intelligence on the Upper Ranks.
• Kagaya announced that Moyu had defeated Lower Rank Five, Rui, and appointed him the Corps’ tenth Hashira, the Eye Hashira.
• After the meeting, Shinobu invited Moyu to the Butterfly Mansion, where she wanted to learn about his eyes and the future he had seen; Moyu accepted and followed her.

At the Butterfly Mansion, Moyu recovered while Tanjiro, Zenitsu, and Inosuke underwent rehabilitation training, and Shinobu Kocho quietly probed his abilities. Kanao Tsuyuri watched Moyu with growing curiosity, while the group’s lively daily routine continued.

• Zenitsu, Tanjiro, and Inosuke reacted with surprise and frustration when they learned Moyu had become the Eye Hashira, and Aoi Kanzaki stopped them from aggravating their injuries.
• Shinobu Kocho introduced her Tsuguko, Kanao Tsuyuri, to Moyu, and Kanao watched as Nezuko greeted him.
• Tanjiro, Zenitsu, and Inosuke began intense rehabilitation training, while Moyu offered them advice and Shinobu asked him about his abilities and tactics.
• Kanao Tsuyuri watched Moyu practice Azure Flow Breathing, but declined when he offered to teach her.
• At dinner, Inosuke challenged Moyu to a future fight, and Moyu told him to first control his breathing and defeat Tanjiro.

At the Butterfly Mansion, Shinobu Kocho taught Moyu and the recovering boys the training needed to master Breathing Style: Constant, while Moyu quickly grasped its basics and helped keep Inosuke and Zenitsu from giving up. A month later, Tanjiro won a reaction drill against Kanao and showed the first signs of mastering Constant, leaving the others determined to improve.

• Shinobu Kocho explained Breathing Style: Constant and began flexibility, reaction, and pursuit training for Tanjiro, Zenitsu, and Inosuke, while Moyu watched and joined the reaction drills.
• Moyu defeated Kanao in three reaction rounds by anticipating her movements, and Shinobu Kocho recognized his unusual ability.
• Moyu and Shinobu Kocho provoked Inosuke and Zenitsu into returning to training whenever they tried to quit, while the boys struggled with exercises including blowing apart gourds.
• Moyu grasped the basics of Constant after practicing through the night, then continued refining it as Tanjiro and the others trained for weeks.
• Tanjiro finally pinned Kanao's hand during a reaction drill and showed a steadier breathing rhythm, while Inosuke and Zenitsu responded to his progress by training harder.

Moyu comforted Shinobu Kocho over her sister Kanae's death and promised to kill Doma, then introduced Armament Haki to the Butterfly Mansion trainees. With Shinobu's help, he taught the technique to the Hashira, and the Demon Slayer Corps began growing stronger.

• Moyu found Shinobu Kocho grieving on the roof and promised to kill Doma for her, giving her a faint hope of becoming herself again.
• Moyu taught Tanjiro, Zenitsu, Inosuke, Kanao Tsuyuri, and Shinobu Kocho the basics of Armament Haki while they continued training at the Butterfly Mansion.
• Shinobu Kocho mastered a stable Haki coating on her palm and part of her Nichirin Blade, demonstrating its power by piercing a wooden board.
• Shinobu Kocho asked Moyu's permission to share Armament Haki with the Demon Slayer Corps, and Moyu agreed.
• Kagaya Ubuyashiki supported the technique and assigned Moyu and Shinobu Kocho to teach the Hashira, most of whom learned basic coating within half a month.

Moyu took the Mugen Train mission after learning that passengers and Demon Slayer Corps investigators had disappeared, while the order initially assigned Tanjiro Kamado, Zenitsu Agatsuma, and Inosuke Hashibira. He left the others to safer training missions and prepared to face the danger alone, aware that Akaza might appear.

• Tanjiro Kamado, Kanao Tsuyuri, Inosuke Hashibira, and Zenitsu Agatsuma practiced Armament Haki at the Butterfly Mansion while Moyu supervised.
• A Kasugai Crow ordered Tanjiro Kamado, Zenitsu Agatsuma, and Inosuke Hashibira to investigate the Mugen Train, where more than forty passengers and several Corps members had gone missing.
• Moyu told Shinobu Kocho that he would take the mission and warned her that Kyojuro Rengoku could be in danger, but he refused to involve other Hashira for fear of changing the future and alerting Muzan.
• Moyu persuaded Kyojuro Rengoku to let him take the mission, arguing that Tanjiro and the others needed safer assignments to develop their skills.
• Moyu prepared to face the Mugen Train's demons, including Enmu and possibly Akaza, while anticipating other unexpected developments.