Chapter Summaries

Kanzaki Kumo and Tengen Uzui set out to find the demon hiding in Yoshiwara, with Kumo restraining his anger over Tengen’s prank. At the Kyogoku House, they meet the oiran Warabihime, whom Kumo recognizes as Daki, while her past as Ume and her transformation with Gyutaro are recounted.

• Kanzaki Kumo suppresses his anger at Tengen Uzui’s prank, and the two leave to investigate the demon in the Entertainment District.
• Kanzaki Kumo and Tengen Uzui decide to ask after famous oiran and arrive in Yoshiwara the following evening.
• Tengen Uzui’s looks and generosity win them a meeting with Warabihime at the Kyogoku House.
• Kanzaki Kumo recognizes Warabihime as a likely demon after she ignores the owner and shows contempt for him.
• The chapter recounts how Ume was burned by a samurai, how Gyutaro killed her attackers, and how Doma turned the siblings into demons who became Upper Rank Six.

Kanzaki Kumo and Tengen Uzui confronted Daki at Kyogoku House, but Gyutaro emerged to protect his sister and force a split in the fight. Tengen pursued Daki while Kanzaki Kumo battled Gyutaro, whose blood-scythe defense kept Kanzaki from landing a killing blow.

• Kanzaki Kumo identified Daki and attacked her with Thunder Breathing, but Gyutaro emerged from her body and blocked the strike with a Blood Scythe.
• Gyutaro narrowly dodged Kanzaki Kumo's follow-up attack, then kicked at Kanzaki and Tengen Uzui before hurling Daki away and telling her to run.
• Kanzaki Kumo told Tengen Uzui to pursue Daki and keep her severed head away from her body, then charged Gyutaro again.
• Gyutaro used Flying Blood Scythes against both swordsmen, but Kanzaki Kumo intercepted them while Tengen chased Daki toward the exit.
• Kanzaki Kumo exchanged blows with Gyutaro but could not safely overcome his poison and defenses; Gyutaro surrounded himself with blood scythes using Arc of Oblivion.

Kanzaki Kumo and Tengen Uzui defeated Upper Rank Six Gyutaro and Daki, collected their blood, and left the Entertainment District. On the journey home, Uzui tried to ease Kumo’s troubled silence, but their conversation ended with the question of Kumo’s makeup coming up.

• Kanzaki Kumo broke through Gyutaro’s blood scythes and beheaded him with Thunder Breathing, Ninth Form: Divine Punishment.
• Daki attacked Tengen Uzui with her sashes, but he destroyed them with Sound Breathing and explosives, then beheaded her.
• Tengen Uzui collected Daki’s blood while Kanzaki Kumo collected Gyutaro’s, and they left after notifying the Kakushi.
• Kanzaki Kumo explained to Tengen Uzui that the Upper Ranks varied greatly in strength and that Gyutaro and Daki were dangerous when fighting together.
• After nearly two days of travel, Kanzaki Kumo and Tengen Uzui returned to Uzui’s residence, where the matter of Kumo’s makeup came up.

Muzan summoned the Upper Ranks after Gyutaro and Daki were killed, and blamed Doma and Akaza for the losses. He ordered the demons to find the Blue Spider Lily or destroy the Demon Slayer Corps, warning that another Upper Rank must not die.

• Akaza arrived at Infinity Castle and saw Kokushibo, Doma, Hantengu, and Nakime already gathered; Nakime's eye showed the rank of Five.
• Muzan announced that Gyutaro and Daki had died and scolded the Upper Ranks for losing two members to the Demon Slayer Corps in less than two years.
• Doma joked about taking responsibility, prompting Muzan to injure him through his demonic cells.
• Muzan blamed Akaza for failing to kill the Swordsman, and Akaza endured the injuries Muzan inflicted on him.
• Muzan ordered the Upper Ranks to find the Blue Spider Lily or destroy the Demon Slayer Corps, warning that another Upper Rank's death would mean the Twelve Kizuki had no reason to exist.
• After Muzan left, Doma approached Akaza, who knocked his arm away and asked Nakime to send him back.

Kanzaki Kumo restored his face and caught Tengen Uzui trying to sneak away from the rest he had promised to arrange, then beat him in a training-ground spar until he was bruised. After three days of covering Tengen’s duties, Kanzaki received notice of a Hashira Meeting about the operation that killed an Upper Rank.

• Kanzaki Kumo asked Tengen Uzui’s wives where he was, then claimed Tengen had minor injuries and needed several days of rest.
• Tengen Uzui tried to sneak away, but Kanzaki Kumo intercepted him and led him to the training ground.
• Kanzaki Kumo defeated Tengen Uzui in a spar, striking his face despite Tengen’s request and leaving him covered in bruises.
• Kanzaki Kumo pulled Tengen Uzui to his feet as Makio, Suma, and Hinatsuru hurried over.
• After Kanzaki Kumo spent three days covering Tengen’s duties, a notice arrived for a Hashira Meeting about the operation against an Upper Rank.

At the Ubuyashiki Estate, the Hashira discussed Upper Rank Six and acknowledged the threat posed by the Upper Ranks. Kagaya told Kanzaki Kumo that two Tsugikuni descendants had been found and asked him to escort Amane and his daughters when they went to invite the brothers to join the Demon Slayer Corps.

• Tengen Uzui and Kanzaki Kumo shared their intelligence on Daki, and Shinjuro Rengoku regained confidence after hearing how she had fared in battle.
• Kanzaki Kumo warned the Hashira that Daki was not a reliable measure of Upper Rank strength, and Kagaya encouraged them by recalling the Corps’ recent victories.
• The Hashira exchanged Breathing Style insights and sparred, where Sabito continued challenging Kanzaki Kumo and showed progress.
• Kagaya told Kanzaki Kumo that descendants of the Tsugikuni family had been found, but the two young brothers, now surnamed Tokito, had declined the Corps’ invitation.
• Kagaya asked Kanzaki Kumo to escort Amane and his daughters when they went to invite the Tokito brothers, and Kanzaki Kumo agreed.

Kanzaki Kumo brought Sanemi and Genya together to talk about Genya’s wish to fight demons alongside his brother. Genya revealed his demon-eating ability, but Sanemi remained opposed, warning that Genya could die before he could use it.

• Kanzaki Kumo seated Sanemi and Genya apart and asked them to explain their positions, while keeping Sanemi from attacking Genya.
• Sanemi told Genya to give up fighting demons because he could not use a Breathing Style and was too weak.
• With Kanzaki Kumo’s encouragement, Genya said he wanted to help Sanemi and had killed a demon by eating its flesh and blood to gain temporary strength and regeneration.
• Sanemi realized Genya must have discovered his ability in a desperate fight and blamed himself for not being there to protect him.
• Sanemi rejected Genya’s offer, explaining that Genya might not be able to bite a powerful demon and could die before using his ability.

Genya insisted on fighting demons beside Sanemi, and Sanemi agreed to let him pursue the Final Selection if he could endure a test against him. After the brothers reconciled, Kanzaki Kumo reflected on his stalled progress toward the Transparent World.

• Genya challenged Sanemi's reasons for forbidding him from fighting demons and explained that he wanted to protect his brother.
• Sanemi agreed to let Genya enter the Final Selection if he could last as long as an incense stick against Sanemi without a Breathing Style.
• Sanemi told Genya he had never blamed him for the past, and the brothers bowed to Kanzaki Kumo before leaving together.
• Kanzaki Kumo agreed with Kanae that the brothers cared for each other but had failed to communicate, and Kanae said she appreciated his support for her training.
• Kanzaki Kumo considered his difficulty progressing from seeing himself with his heart to seeing the world with his heart.

Kanzaki Kumo took Amane and her daughters to Mount Fujikasane to capture a demon, planning to use it to convince Yuichiro Tokito that demons existed. After securing the demon in a sack, they continued toward the Tokito Brothers' home.

• Kanzaki Kumo explained that Yuichiro Tokito doubted demons existed, so he planned to show him one while recruiting the Tokito Brothers.
• Amane agreed to Kanzaki Kumo's plan, while the Kakushi driver recognized the situation from a previous unsettling assignment.
• Kanzaki Kumo found a weakened demon on Mount Fujikasane and bound it with rope.
• Kanzaki Kumo stuffed the demon into the sack and carried it back to the carriage, leaving Amane and her daughters uneasy.

Kanzaki Kumo and the Demon Slayer Corps found the Tokito brothers in the mountains and proved demons were real by showing them a captured demon. Muichiro responded with unusual resolve, and the brothers watched the demon vanish in sunlight.

• The group met Yuichiro and Muichiro Tokito on a mountain path, where wary Yuichiro refused their invitation to join the Demon Slayer Corps.
• Kanzaki Kumo tossed the sack containing a demon in front of Yuichiro and told him to look inside.
• Yuichiro opened the sack and froze in fear at the demon, but Muichiro pulled him back and showed killing intent.
• Kanzaki Kumo explained that sunlight was a demon's bane, then tipped the demon into the sun, where it vanished before the Tokito brothers.

Kanzaki Kumo warned the Tokito Brothers that demons could reach their mountain home and persuaded Yuichiro to join the Demon Slayer Corps alongside Muichiro. The group left for the Ubuyashiki Estate, where Amane explained the Corps to the brothers.

• Kanzaki Kumo explained that joining the Demon Slayer Corps would give Yuichiro and Muichiro a chance to train and fight back against demons, though they would not be sent into battle as children.
• Yuichiro reconsidered after realizing that a demon could find the brothers in the mountains and that his fear had left him unable to protect Muichiro.
• Muichiro urged Yuichiro to decide, and Yuichiro reluctantly agreed to join the Demon Slayer Corps, hoping to overcome his fear.
• Kanzaki Kumo planned to have the Tokito Brothers train with Gyomei, while the group packed, ate in a nearby town, and headed toward the Ubuyashiki Estate.
• Amane explained the Demon Slayer Corps' rules and benefits to the Tokito Brothers, while Nichika and Hinaki were surprised that Kanzaki Kumo had recruited them so quickly.

Kanzaki Kumo visited Gyomei and learned that he had mastered the Transparent World, then asked why he remained unable to enter it himself. Gyomei suggested that Kumo’s heart was unsettled and had not yet found a place to belong in the world.

• After Kagaya sent the Tokito Brothers to train with Gyomei, Tanjiro and the brothers spent more than a month training without learning a Breathing Style.
• Kanzaki Kumo visited Gyomei’s residence and found Tanjiro and the Tokito Brothers practicing squats with logs; Tanjiro and Muichiro trained earnestly while Yuichiro remained resentful.
• Kanzaki Kumo left the trainees to continue and found Gyomei pushing a giant boulder while reciting sutras.
• Kanzaki Kumo realized he could no longer sense Gyomei’s presence and asked whether Gyomei had mastered the Transparent World.
• Gyomei described entering the Transparent World and seeing the world, its laws, and the rhythms of life and death with extraordinary clarity.
• Kanzaki Kumo asked why he could not enter the realm, and Gyomei suggested that Kumo’s heart was not still and had not found a place to belong in the world.

Gyomei told Kanzaki Kumo that his inability to find inner peace might be holding him back from mastering the Transparent World, and Kumo recognized the fear behind his drive to protect everyone. The chapter then showed Kumo returning to physical training and Zenitsu persisting through Jigoro Kuwajima’s harsh lessons as he focused on Thunder Breathing’s First Form.

• Gyomei told Kanzaki Kumo that he cared for others but did not rely on them, and suggested that his lack of inner peace might cause his bottleneck.
• Kanzaki Kumo reflected on the danger Muzan and the Upper Ranks posed, then decided to keep strengthening his body instead of seeking peace for now.
• Kanzaki Kumo thanked Gyomei and resumed training with the equipment he had used before.
• Jigoro Kuwajima ambushed Zenitsu Agatsuma during training and scolded him for failing to react, but Zenitsu insisted he would improve.
• The chapter explained that Zenitsu struggled with every Thunder Breathing form except the First Form, so he chose to develop it as the foundation for a technique of his own.

After a month of training with Gyomei, Kanzaki Kumo reached his physical limit and left Tanjiro and the Tokito brothers astonished by his strength. At the Butterfly Mansion, Kiyo Terauchi, Sumi Nakahara, and Naho Takada joined the Medical Department, while Kumo remained unable to think of the household as people he could rely on without feeling responsible for protecting them.

• Kanzaki Kumo finished a month of training at Gyomei's place, realized he had reached his body's limit, and left after resting.
• Tanjiro and Muichiro responded to Kumo's training with admiration and determination, while Yuichiro was relieved that Kumo had a good temper.
• Kiyo Terauchi, Sumi Nakahara, and Naho Takada arrived at the Butterfly Mansion after their adoptive physicians passed away, and began helping in the Medical Department.
• The three girls quickly won the affection of the Medical Department and several Butterfly Mansion residents, putting Kanao's place as everyone's darling under threat.
• Kanzaki Kumo felt proud of the large, warm household, but could not stop seeing himself as its protector and struggled to trust its members to face danger.

Kanzaki Kumo returned to Mount Momiji and reunited with Jigoro Kuwajima and Zenitsu Agatsuma over dinner. After Kumo accidentally broke the door by kicking it open, he repaired it and joined them for a meal.

• Jigoro Kuwajima reflected on teaching Zenitsu Agatsuma and wondered when Kanzaki Kumo would visit again.
• Kanzaki Kumo kicked open the door and greeted Kuwajima and Zenitsu, then watched it fall off its hinges.
• Kanzaki Kumo repaired the door with tools from the Storage Room.
• Jigoro Kuwajima invited Kumo to eat and scolded him for being reckless.

Zenitsu demonstrated his progress in Thunder Breathing, and Kanzaki Kumo offered to strengthen his body with a special training method. Kanzaki brought him to Gyomei’s residence, where Zenitsu saw the punishing equipment and realized he might not be able to go back.

• Zenitsu used Thunderclap and Flash three times in succession, and Kanzaki Kumo caught his final strike before his legs gave out.
• Kanzaki Kumo praised Zenitsu’s progress and offered him a way to improve his physical conditioning.
• Zenitsu agreed to try the method despite sensing Kanzaki Kumo’s enjoyment of his impending misfortune.
• Kanzaki Kumo took Zenitsu to Gyomei’s residence, where heavy footsteps and labored shouts made Zenitsu increasingly uneasy.
• Zenitsu arrived at the training ground, saw the intimidating equipment beside three boys, and wondered if it was too late to go back.

Kanzaki Kumo sparred with Gyomei to test his speed against the Transparent World, pushing his body past its limits with a five-strike attack. He concluded the burst was still insufficient to defeat Akaza and was bandaged by an angry Shinobu Kocho.

• Kanzaki Kumo left Zenitsu with Tanjiro Kamado, Yuichiro Tokito, and Muichiro Tokito to get acquainted, then went to find Gyomei.
• Kanzaki Kumo sparred with Gyomei, whose Stone Breathing defense stopped his normal Dragon's Roam attack.
• Kanzaki Kumo stimulated his heart and unleashed five consecutive strikes with Thunder Breathing, Ninth Form: Divine Punishment, forcing Gyomei to use his axe to block the final slash.
• Kanzaki Kumo collapsed from exhaustion, and Gyomei checked his minor injuries before sending a Kasugai Crow to the Butterfly Mansion.
• Kanzaki Kumo judged that his attack would not overcome Akaza's defenses, while Shinobu Kocho arrived and bandaged him, scolding him for risking his life in a spar.

While recovering from his injuries, Kanzaki Kumo was visited by several girls, leaving the Tokito brothers astonished by the attention he received. He then learned that Kanao had secretly taught herself Flower Breathing by watching Kanae train, and she was already asking to join Gyomei's training.

• Shinobu Kocho confronted Kanzaki Kumo about acting recklessly while gently treating his injuries, and Kanao, Mitsuri, Kanae, and Makomo visited him as he recovered.
• Yuichiro asked Zenitsu whether the many girls visiting Kanzaki Kumo was normal, and Zenitsu explained why he thought his senior fellow disciple attracted them.
• Tanjiro said Kanzaki Kumo's partners seemed happy together, while Muichiro silently watched the discussion.
• Kanzaki Kumo learned that Mitsuri and Kanao wanted to join Gyomei's training and tried to persuade Kanao that she did not need it.
• Kanao revealed that she had learned Flower Breathing by watching Kanae's training and had tried unsuccessfully to learn Kanzaki Kumo's Thunder Breathing.

Kanao revealed that she had secretly learned Flower Breathing and asked Kanzaki Kumo to let her join the fight against demons. Kanzaki Kumo agreed after hearing her resolve, while Mitsuri’s accidental sigh of relief broke the tension.

• Kanzaki Kumo realized Kanao had learned Flower Breathing by watching Kanae train when she was a child.
• Kanao recalled secretly practicing for years because she wanted to help Kanzaki Kumo and feared he would dissuade her.
• Kanao reminded Kanzaki Kumo that he had promised to respect their personal wishes and insisted she wanted to fight alongside her big sisters.
• Kanzaki Kumo asked whether Kanao had truly thought it through, and she reaffirmed her decision.
• Kanzaki Kumo agreed to let Kanao help, and Mitsuri accidentally sighed with relief while holding her breath.

Kanzaki Kumo tested Kanao’s Flower Breathing and saw how skillfully she adapted her techniques during their spar. Kanao ended the assessment by collapsing into his arms, while the four little ones watched.

• Kanzaki Kumo took Kanao and Mitsuri to the training clearing and challenged Kanao to show what she had learned.
• Kanao used several Flower Breathing forms, and Kanzaki Kumo guided her attacks while demonstrating his Thunder Breathing, Eighth Form: Storm of Blossoms.
• Kanzaki Kumo gradually increased his speed to test Kanao’s vision and limits, and Kanao adapted by leaping into a counterattack before continuing through more Flower Breathing forms.
• As Kanao ran out of stamina, she dropped her Wooden Sword and threw herself into Kanzaki Kumo’s arms, trusting him to catch her.
• Tanjiro and Muichiro watched with longing, Zenitsu resolved to study Kanzaki Kumo’s behavior, and Yuichiro turned away in exasperation.