Chapter Summaries

Moyu left the Butterfly Mansion for the Mugen Train mission and developed a high-speed movement technique using Blue. After killing a swift Demon near the town, he waited near the train depot for the Mugen Train to return to service.

• Moyu told Tanjiro, Zenitsu, and Inosuke to take other assignments, said farewell to Nezuko and Shinobu Kocho, and left the Butterfly Mansion.
• Moyu used Blue to pull himself rapidly toward distant points, reaching a town near the Mugen Train mission area by sunset.
• Moyu questioned a Kakushi about a fast Demon and found it attacking a girl alone in a dark alley.
• Moyu rescued the girl, pursued the fleeing Demon with Blue, and killed it with Azure Star, earning 4,000 coins.
• Moyu searched around the Mugen Train station for two days but found no other Demons, then checked into an inn to wait for the train and practice using Blue.

Moyu boarded the Mugen Train and resisted Enmu’s Blood Demon Art, then discovered that Enmu had fused with the train. He killed Enmu and the three other Lower Rank Demons, freeing the sleeping passengers as the train came to a stop.

• Moyu sensed Enmu’s hypnotic power spreading through the train, resisted the dream, and killed two of Enmu’s minions.
• Moyu confronted Rokuro, Byōga, Mukago, and Enmu, who had fused his body with the train.
• Moyu used Inviolability to block the three demons’ attacks, then rushed to the locomotive and destroyed Enmu’s core.
• Moyu killed Mukago, Byōga, and Rokuro as they tried to flee or fight back.
• The train’s mental field collapsed, the passengers began to recover, and the train slowed to a stop.

Moyu fought Akaza away from the Mugen Train, protecting its sleeping passengers while resisting the Upper Rank demon’s attacks. By invoking Hakuji’s lost memories, Moyu unsettled Akaza and drove him to flee at dawn, leaving open the possibility that he might remember his past.

• Moyu left the Mugen Train and drew Akaza into the nearby woods to keep their battle away from the passengers.
• Moyu used Limitless, the Six Eyes, and Azure Star to evade and counter Akaza, but Akaza’s regeneration healed his wounds.
• Akaza activated Compass Needle and pressed Moyu with precise attacks, then urged him to become a demon.
• Moyu reminded Akaza of Hakuji, the dojo, his master, and Koyuki, disrupting Akaza’s fighting rhythm and landing a deep strike to his chest.
• Akaza unleashed Azure-Silver Chaotic Afterglow, injuring Moyu, but fled when dawn approached.
• Moyu called after Akaza as Hakuji, and Akaza briefly paused before disappearing into the forest.

After defeating Akaza, Moyu exchanged for an advanced meditation method and introductory guidance in Reverse Cursed Technique, then began training both. He learned to produce a small amount of positive energy and successfully formed a prototype Red before returning to consider safer ways to strengthen himself and his Nichirin Blade.

• Moyu recovered from the fight with Akaza and recognized that the strain of using the Six Eyes had caused mental fatigue and minor internal injuries.
• He spent Coins on the Advanced Mental Strength Meditation Method and Reverse Cursed Technique, then used meditation to restore more than half his mental strength.
• After two failed attempts, Moyu produced a faint current of positive energy with Reverse Cursed Technique.
• Moyu practiced reversing Blue's attraction into Red's repulsion and formed a tiny prototype Red that bored a smooth hole into a rock.
• When Kakushi arrived, Moyu instructed them to help the train passengers and report the mission's completion before he headed back to headquarters.
• On the journey back, Moyu considered making Azure Star a Red Nichirin Blade, rejected pursuing the Demon Slayer Mark, and focused on steadily building his strength.

Moyu reported the Mugen Train battle to Kagaya Ubuyashiki and the Hashira, revealing the strength and abilities of Upper Rank Three, Akaza. He introduced the Red Nichirin Blade and Transparent World as new paths for the Corps to grow stronger, then returned to the Butterfly Mansion and began training.

• Moyu returned to headquarters, where Shinobu Kocho welcomed him and briefed him on the Kakushi's preliminary report.
• Moyu told Kagaya Ubuyashiki and the Hashira about the Mugen Train demons and his battle against Akaza, explaining how he had survived until dawn.
• Moyu described the Red Nichirin Blade and Transparent World, and Kagaya urged the Hashira to explore both methods carefully in training.
• Moyu returned to the Butterfly Mansion, washed, and tried to warm his Nichirin Blade, but it did not turn red.
• Moyu told Shinobu he planned to train in the Red Nichirin Blade and refine his energy techniques, then practiced meditation and the Reverse Cursed Technique in his room.

Moyu mastered the basics of turning the Azure Star into a stable Red Nichirin Blade through precise energy control. He then guided Shinobu Kocho in adapting the method to Insect Breathing, and she produced a brief purplish-red glow on her blade.

• Moyu used his Six Eyes to refine his energy flow and made the Azure Star glow steadily crimson from guard to tip.
• Shinobu Kocho watched Moyu's training and asked whether his energy-control method could help her overcome her weak wrists.
• Moyu began teaching Shinobu to sense her blade's pathways and channel her Insect Breathing energy through them.
• With Moyu's guidance, Shinobu concentrated her energy into rapid streams and identified key points for generating heat.
• Shinobu made a faint purplish-red sheen appear near her blade's guard, marking her first successful step toward a Red Nichirin Blade.

Moyu continued strengthening his mental abilities, Reverse Cursed Technique, and control of Red while Tanjiro, Zenitsu, and Inosuke were away. Their noisy return brought the Butterfly Mansion back to life, and Tanjiro’s thoughtful gift prompted Kanao to thank him aloud before the mansion settled into a peaceful night.

• Moyu improved his mental strength and perception, learned to produce small amounts of positive energy, and practiced controlling low-output Red.
• Tanjiro, Zenitsu, and Inosuke returned to the Butterfly Mansion, where Aoi and the girls welcomed them and Shinobu and Moyu greeted them.
• Zenitsu exaggerated his heroics, Inosuke bragged about defeating Demons and challenged Moyu, and Tanjiro reported their mission to Shinobu.
• Tanjiro gave Kanao a woven butterfly bookmark, and she accepted it and quietly thanked him, surprising Shinobu.
• Shinobu arranged for the returning Demon Slayers to wash, eat, and have their wounds checked, then shared a quiet cup of tea with Moyu as the mansion grew peaceful.

Tengen Uzui arrived at the Butterfly Mansion to recruit female Corps members for an Entertainment District mission, but Moyu redirected him to take Tanjiro, Zenitsu, and Inosuke in disguise. After the group departed, Moyu told Shinobu Kocho that he planned to go to the district later and expected to encounter Upper Rank Six.

• Tengen Uzui tried to carry Aoi Kanzaki and Naho Takada away for his mission, but Moyu stopped him and suggested disguising Tanjiro, Zenitsu, and Inosuke instead.
• Tengen Uzui gave the three boys an extravagant, disastrous makeover, then told them to wash it off and wait until they reached the Entertainment District.
• Tengen Uzui announced that he was the Festival God and ordered Tanjiro, Zenitsu, and Inosuke to follow his lead as they set off for the district.
• Moyu and Shinobu Kocho watched the group leave, and Moyu said he would go to the Entertainment District later to meet an Upper Rank, likely Upper Rank Six.

Moyu found Tengen Uzui’s captured wives and identified Warabihime as Upper Rank Six, then lured Daki out of the Entertainment District and beheaded her with a Red Nichirin Blade. The chapter ended as Gyutaro emerged from Daki’s body and confronted Moyu over making his sister cry.

• Moyu told Tengen Uzui where Hinatsuru, Makio, and Suma were being held and revealed that Warabihime was Upper Rank Six.
• Moyu confronted Daki at Kyogoku House and provoked her into chasing him beyond the city.
• Moyu fought Daki in the wilderness, cut through her ribbons, and beheaded her with a Red Nichirin Blade.
• Daki cried for her brother, and Gyutaro emerged from her headless body to confront Moyu.

Moyu fought Upper Rank Six Gyutaro and Daki, killed them with Cursed Technique Reversal: Red, and learned that Tanjiro and the others had rescued the hostages. Tengen Uzui arrived after the battle, and Moyu headed back toward the Entertainment District as dawn approached.

• Gyutaro restored Daki’s head and attacked Moyu alongside her, combining Blood Scythes and sashes.
• Moyu used his Red Nichirin Blade and Azure Flow Breathing forms to deflect their attacks and wound Gyutaro.
• Moyu unleashed Red, erasing Gyutaro, Daki, and their weapons, and received a system notification confirming their deaths.
• Tengen Uzui arrived and learned Moyu had already defeated Upper Rank Six; he reported that Tanjiro and the others had rescued everyone.
• Moyu and Tengen prepared to return to the Entertainment District as the eastern sky began to brighten.

Moyu and Tengen Uzui returned from the Entertainment District with Tanjiro, Zenitsu, and Inosuke, having defeated Upper Rank Six and rescued the captives. Back at the Butterfly Mansion, everyone recovered and resumed training while Moyu reflected on what he had learned and anticipated the demons’ next attack.

• Moyu and Tengen Uzui reunited with Tanjiro, Zenitsu, and Inosuke after the boys helped rescue the women held beneath Ogimoto House.
• The group traveled to Demon Slayer Corps headquarters, where Tengen Uzui went to report Upper Rank Six’s defeat while Moyu escorted the boys to the Butterfly Mansion.
• Aoi Kanzaki and Shinobu Kocho welcomed the returning Demon Slayers and checked that they were unharmed.
• Moyu told Shinobu Kocho that Upper Rank Six had been a brother and sister, and she shared her progress combining the Red Nichirin Blade with her Insect Breathing poison.
• Tanjiro, Zenitsu, and Inosuke resumed training at the Butterfly Mansion while Moyu reflected on his battle experience and anticipated Hantengu and Urinal attacking the Swordsmith Village.

Moyu improved his mental strength with a Clear-Mind Concentration Pill and learned that Muichiro planned to visit the Swordsmith Village. After hearing that Upper Rank Demons would attack it, Moyu arranged to travel there with Mitsuri Kanroji, intending to stop them.

• Moyu exchanged 10,000 Coins for a Clear-Mind Concentration Pill and used it to make his meditation more effective.
• Mitsuri Kanroji visited the Butterfly Mansion and told Shinobu Kocho and Moyu that the Hashira had been making progress with Red Nichirin Blade training.
• Mitsuri said Muichiro Tokito planned to visit the Swordsmith Village, and Moyu offered to accompany her, claiming Azure Star needed maintenance.
• Moyu told Shinobu Kocho that he had a bad feeling about the village and agreed to leave with Mitsuri the next morning.
• Moyu prepared for the journey and resolved to confront Gyokko and Hantengu, who were about to attack the Swordsmith Village.

Moyu and Mitsuri arrived at Swordsmith Village, where Moyu persuaded Muichiro to stay after warning that demons might attack. At the hot springs, Mitsuri shared why she joined the Demon Slayer Corps, while the village remained peaceful for the night.

• Moyu and Mitsuri traveled to Swordsmith Village and were welcomed by its chief, Tecchin Tecchikawahara.
• Moyu and Mitsuri found Muichiro trying to take the key to Yoriichi Type Zero from Kotetsu so he could train with the puppet.
• Moyu explained that the puppet was too damaged to help Muichiro train, then warned that demons might attack the village.
• Muichiro agreed to stay, while Kotetsu took Yoriichi Type Zero away and Tecchin arranged tighter security.
• Moyu joined Mitsuri at the hot springs, where she described her childhood rejection and her reasons for joining the Corps.

Moyu, Mitsuri, and Muichiro explored Swordsmith Village and spent a peaceful day preparing for danger. At dusk, Moyu sensed Upper Ranks Gyokko and Hantengu approaching and sent Mitsuri and Muichiro to intercept Gyokko while he went to face Hantengu.

• Moyu and Mitsuri toured the village, where they met Muichiro and later saw Kotetsu caring for Yoriichi Type Zero.
• Moyu practiced while Mitsuri and Muichiro sparred, and the three later visited a mountain lookout before joining Chief Tetchikawahara for dinner.
• Moyu sensed Upper Rank Five Gyokko approaching from the village's left side and warned Mitsuri and Muichiro about his abilities.
• Moyu detected Upper Rank Four Hantengu approaching from another direction and ordered Mitsuri and Muichiro to intercept Gyokko while he faced Hantengu.
• Moyu vanished into the dusk, and Mitsuri and Muichiro prepared to defend the village and its residents.

Moyu confronted Upper Rank Four Hantengu near Swordsmith Village and beheaded him, forcing his body to split into Sekido and Karaku. As Moyu fought the pair, he searched for their hidden main body and demonstrated that their attacks could not penetrate his defenses; the chapter ended with Sekido hurled into a mountainside.

• Moyu tracked Hantengu through the forest and confronted him on a mountainside away from Swordsmith Village.
• Moyu beheaded Hantengu, whose corpse split into the demons Sekido and Karaku.
• Sekido and Karaku attacked Moyu with lightning, sound waves, and wind, but Inviolability deflected their strikes.
• Moyu analyzed the split demons and searched for the energy connection leading to Hantengu's hidden main body.
• Moyu caught Sekido's lightning staff, knocked Karaku's wind blade off course with a pebble, and struck Sekido into the mountainside.

Moyu defeated Hantengu’s split forms and destroyed the hidden main body, ending Upper Rank Four’s life. With the battle over, he headed to support Mitsuri and Muichiro, who were still fighting Gyokko.

• Urogi and Aizetsu emerged from Sekido, and the four split forms attacked Moyu together with their Blood Demon Arts.
• Moyu countered their assault, killed Urogi and Aizetsu with his Red Nichirin Blade, and forced Sekido and Karaku to fuse into Zohakuten.
• Moyu fought through Zohakuten’s wooden dragons and destroyed him with Cursed Technique Reversal—Red.
• Moyu found Hantengu’s tiny main body hiding in the rubble, but it transformed into the Hate Demon before he could strike.
• Moyu pierced the true main body hidden inside the Hate Demon, killing Hantengu and receiving 50000 coins.
• Moyu sheathed his sword and set off to help Mitsuri and Muichiro fight Gyokko.

Mitsuri Kanroji and Muichiro Tokito battled Gyokko near the Swordsmith Village, but his speed, attacks, and poison put them in danger. Moyu arrived just in time to stop Gyokko’s claw and took over the fight with his Red Nichirin Blade.

• Mitsuri Kanroji and Muichiro Tokito confronted Gyokko when he emerged from a pot in the clearing and attacked them with poisonous needles and octopus tentacles.
• Muichiro Tokito weakened Gyokko’s tentacle, and Mitsuri Kanroji severed it before Gyokko trapped her in a Water Prison Pot and sent poisonous fish after Muichiro.
• Mitsuri Kanroji awakened a Red Nichirin Blade and cut her way out of the prison, while Muichiro Tokito also activated his Red Nichirin Blade and advanced through the fish.
• Gyokko transformed into his fish-scaled form and fought Mitsuri Kanroji and Muichiro Tokito with renewed speed, claws, needles, and tentacles.
• Gyokko exploited the poison slowing Muichiro Tokito and lunged for his throat, but Moyu appeared and stopped the claw with an invisible barrier.
• Moyu told Gyokko he would be his opponent and drew Azure Star, which glowed crimson.

Moyu defeated Upper Rank Five Gyokko after protecting Mitsuri Kanroji and Muichiro Tokito from his attacks, while revealing that Upper Rank Four Hantengu had also been dealt with. With both Upper Ranks dead, Moyu and the others prepared to return to Swordsmith Village.

• Moyu told Mitsuri Kanroji and Muichiro Tokito to rest while he fought Gyokko alone, then annihilated Gyokko's combined Blood Demon Art with Cursed Technique Lapse—Blue.
• Moyu evaded Gyokko's attacks and wounded him with Azure Flow Breathing, Second Form: Mirror Dissection, while Gyokko tried to unsettle him by claiming Hantengu was still attacking Swordsmith Village.
• Moyu revealed that he had already dealt with Hantengu, then pressed his attack as Gyokko summoned his remaining monsters.
• Moyu destroyed Gyokko's monsters with Azure Flow Breathing, Third Form: Myriad Forms Mimicry, Blazing Flame, and killed Gyokko with Cursed Technique Reversal—Red, full power.
• Mitsuri and Muichiro checked on Moyu, who said he was fine and led them back toward the village to rest and tend to their injuries.

After the Swordsmith Village battle, Moyu reassured Mitsuri and Muichiro that he might find a safer way to strengthen the Demon Slayers, while Muzan vowed to track him down. The villagers returned to safety, but Muzan’s growing fear turned Moyu into a priority target.

• Moyu told Tecchin Tecchikawahara that the demons were dead and arranged for the Kakushi to clear the battle sites before the villagers returned.
• Mitsuri asked Moyu how he had grown so powerful and voiced her fear that the Demon Slayer Corps could not defeat the stronger Upper Ranks.
• Moyu described a forbidden power that shortened its user’s life, then considered a side-effect-free training method and promised to raise his idea at a Hashira Meeting.
• Muzan watched the memories Gyokko had sent before dying and became enraged by Moyu’s strength and rapid growth.
• Muzan ordered Nakime to locate the Ubuyashiki family and report Moyu’s location and movements.

Moyu learned the Dragon Elephant Prajna Skill and presented its first six levels to the Hashira after returning from the Swordsmith Village. As the Corps prepared for Muzan’s retaliation, Moyu proposed intensive training for promising slayers while he handled urgent threats.

• Moyu spent 50,000 Coins to acquire the Dragon Elephant Prajna Skill, practiced its first level, and transcribed the first six levels onto a scroll.
• Moyu, Mitsuri Kanroji, and Muichiro Tokito returned to headquarters and joined the Hashira Meeting presided over by Amane Ubuyashiki.
• Mitsuri recounted the fight against Gyokko and Hantengu, and Moyu described their abilities and weaknesses to the Hashira.
• Amane warned that Muzan Kibutsuji might retaliate after losing two Upper Ranks and urged the Corps to remain on high alert.
• Moyu stopped Sanemi Shinazugawa from confronting Giyu Tomioka by reminding Giyu of Sabito’s words, and Giyu returned to the meeting.
• Moyu shared the Dragon Elephant Prajna Skill scroll and proposed that the Hashira train promising slayers while he handled dangerous demons and urgent missions.