Chapter Summaries

Su Chen killed a demon who revealed that an Upper Rank carrying a fan was nearby, then discovered Tengen Uzui had been poisoned. He used his self-developed Breathing Technique to halt the poison’s spread and activated the Transparent World to examine Tengen’s body.

• Su Chen questioned a little demon, learned the other Upper Rank carried a fan, and killed the demon after detecting another demon nearby.
• Tengen Uzui arrived after the battle and collapsed from Gyutaro’s poison.
• Hinatsuru, Suma, and Makio feared Tengen was dying until Su Chen reminded them that he was a doctor.
• Su Chen placed a hand on Tengen’s chest and used his own Breathing Technique to stop the poison from spreading.
• Su Chen activated the Transparent World and looked inside Tengen Uzui’s body.

Su Chen created a blood-and-flame technique to purge the poison from Tengen Uzui, saving his life but collapsing from blood loss. Tengen carried the unconscious Su Chen and ordered the others to keep the incident secret.

• Su Chen realized Tengen Uzui's poison had spread too far for medicine and prepared to try a dangerous technique.
• Su Chen repeatedly attempted to combine his blood with his flaming, vibrating blade as Tengen and the others waited.
• As the sun rose, Su Chen cut his arm and unleashed a pink, blood-colored flame that burned across Tengen's body.
• Su Chen created Dragon Breathing, Tenth Form-Dragon-Burning Vital Blood, which cleared the poison and restored Tengen's strength.
• Su Chen fainted from anemia, and Tengen carried him while telling the others not to reveal what had happened.

Tengen Uzui realized Su Chen had used a Blood Demon Art but chose to leave with Hinatsuru and the others to recover. Doma learned that Hantengu, Gyutaro, and Daki had died and that Su Chen had escaped, then killed the lesser demon who repeated Su Chen’s insult.

• Tengen Uzui decided to take Hinatsuru and the others to Hinatsuru’s place to recover before leaving.
• A lesser demon reported to Doma that Hantengu and Gyutaro had died, and Daki had also been killed.
• Doma grew furious when he heard that the demons had failed to catch Su Chen and crushed the lesser demon’s arms.
• The lesser demon told Doma that Su Chen had asked, “Lord Doma, who the fuck are you trying to fool?”
• Doma crushed the lesser demon’s head and narrowed his eyes as he thought about Su Chen.

After recovering from his injuries, Su Chen worried about his identity as a Demon Eater and resolved to use his Blood Demon Art only in emergencies. Tengen Uzui visited with his wives, teased Su Chen about his feelings for Kocho, and prepared a mysterious “secret weapon” to help their relationship before Su Chen returned.

• Su Chen woke after a day of healing and wondered whether being a Demon Eater still made him human.
• Su Chen decided to use his blood-consuming, unreliable Blood Demon Art only in critical moments.
• Tengen Uzui and his three wives visited Su Chen, and Tengen tried to take him to a geisha at the Kyogoku House.
• Su Chen refused, and Tengen concluded that he cared for Kocho and teased him about finding a partner.
• Hinatsuru and Makio brought out a mysterious item from a cabinet, leaving Su Chen stunned.

Su Chen left the Entertainment District with gifts, travel tickets, and a backpack full of stockings and fishnets, then began reviewing what he had learned during the battle. As his journey home began, he realized he had learned Sound Breathing.

• Tengen Uzui gave Su Chen black stockings and fishnets, and Su Chen accepted them despite insisting he would not make Shinobu Kocho or Kanao Tsuyuri wear them.
• Tengen Uzui sent a detailed report to Demon Slayer Corps Headquarters about the battle against an Upper Rank, while Hinatsuru gave Su Chen train and boat tickets.
• Su Chen left copper coins and a Five-Flavour Zither for Hinatsuru before departing the Entertainment District.
• Su Chen boarded a vehicle home and reflected on the destruction caused during the battle.
• Su Chen reviewed his insights from fighting Hantengu and recognized that he had learned Sound Breathing.

Su Chen mastered Tengen Uzui’s Sound Breathing techniques and Musical Score, then used his newly refined hearing to predict a driver’s movements. Near the edge of the Entertainment District, he heard the sound of water freezing into ice and sent the driver away.

• Su Chen mentally copied Tengen Uzui’s Sound Breathing techniques and considered how they suited his abilities.
• Su Chen used Transparent World to learn Musical Score, which let him predict an enemy’s moves by listening to minute sounds.
• Su Chen reflected on the different types of Breathing Styles and hoped to learn the remaining basic styles.
• Su Chen predicted when the driver would steer left and right, then asked him to stop near the edge of the Entertainment District.
• Su Chen heard a crisp sound like water freezing into ice crystals and told the driver to head back.

Su Chen left the driver and used his heightened senses to approach the forest near the Entertainment District, where he encountered Doma’s icy Blood Demon Art. After inhaling the ice crystals, Su Chen began repairing his lungs and holding his breath, while Doma noticed the disturbance and realized someone was nearby.

• Su Chen paid the driver to leave him near the Entertainment District so he could continue on foot.
• Su Chen used Clairaudience and Dragon Breathing as he headed toward the forest, while Doma waited nearby for his prey.
• Su Chen entered the woods and recognized Doma’s Blood Demon Art after the icy mist harmed his lungs and disrupted his Transparent World.
• Su Chen held his breath and used Total Concentration: Hundred Refinements to repair his lungs while running.
• Doma noticed that part of his Blood Demon Art had been absorbed and declared that he had found Su Chen.

Doma tracked down Su Chen and froze him in place with his Blood Demon Art, leaving him unconscious inside an ice sculpture. Believing Su Chen’s expression showed disdain, Doma shattered the sculpture in anger.

• Doma created ice-crystal clones to search for Su Chen while Su Chen headed toward the train station to escape the forest.
• Two Doma clones ambushed Su Chen from opposite directions, and a third used White Princess of Frigid Ferocity to freeze him before he could attack.
• Doma found Su Chen trapped in an ice sculpture and proposed turning him into a demon so they could be friends.
• Doma mistook Su Chen’s frozen expression for rejection, grew annoyed and angry, and smashed the ice sculpture.

Su Chen escaped Doma aboard a train by using a Dragon Shadow Clone, but the clone’s death left him injured and revealed Doma’s overwhelming strength. Meanwhile, Shinobu Kocho and Shinazugawa arrived in the Entertainment District to search for Su Chen, unaware that he had already left.

• Doma mistook Su Chen’s frozen clone for the real Su Chen and celebrated after concluding that Su Chen was a demon like him.
• Aboard the train, Su Chen recovered the clone’s memories and learned that Doma had stayed behind, confessing his love to the ice sculpture.
• Su Chen realized Doma had defeated his clone in one encounter and reconsidered his own confidence after killing several Upper Ranks.
• Shinobu Kocho and Shinazugawa reached the Entertainment District, where they missed Su Chen because Hinatsuru’s message had not reached headquarters.
• Shinobu Kocho questioned Shinazugawa’s motives, then ordered him to follow her to Hinatsuru’s Kyogoku House.

Shinazugawa and Shinobu Kocho visited Kyogoku House to meet the Oiran, but Mizurō accused Shinazugawa of a past scandal that had actually involved someone impersonating him. The misunderstanding was not resolved before the Oiran arrived downstairs.

• Shinobu Kocho and Shinazugawa told the madam they were Hashira and asked to see the Oiran.
• Mizurō accused Shinazugawa of paying one coin for sex, and the crowd repeated the story.
• Shinazugawa denied the accusation and frightened Mizurō into silence with his murderous glare.
• Shinobu Kocho teased Shinazugawa about the accusation and his feelings toward Kanae.
• The madam announced that the Oiran had come downstairs.

Hinatsuru told Shinobu Kocho and Shinazugawa that Su Chen had returned to the Butterfly Mansion after helping Tengen defeat three Upper Rank demons. She began explaining why Su Chen had visited the Kyogoku House, but Shinazugawa interrupted and mistakenly assumed he had gone to a brothel, leaving Shinobu furious and Hinatsuru unable to finish.

• Hinatsuru told Shinobu Kocho that Su Chen was safe and had taken a boat and train back to the Butterfly Mansion.
• Hinatsuru revealed that Su Chen and Tengen had slain Upper Ranks Four, Five, and Six, stunning Shinobu and Shinazugawa.
• Shinazugawa praised Su Chen's strength, while Shinobu briefly blamed herself before accepting Su Chen's confidence in her.
• Hinatsuru began explaining that Su Chen had visited the Kyogoku House after escaping, but Shinobu assumed he had asked for a girl.
• Shinazugawa dismissed Hinatsuru's attempt to clarify and joked that Su Chen had visited a brothel, leaving Shinobu and Hinatsuru silent.

Shinobu Kocho confronted Shinazugawa after hearing a misleading account of Su Chen’s visit to Kyogoku House. Hinatsuru clarified what had happened, and Shinobu learned that Su Chen had gathered information and returned to help her and the others before boarding a boat home.

• Shinobu Kocho drew her blade on Shinazugawa, and Hinatsuru claimed they were practicing music when the madam heard swords clashing.
• The madam described Shinazugawa visiting the oiran and playing music, prompting Shinobu to suspect Su Chen had behaved like a devoted admirer.
• Shinobu accused Shinazugawa of being involved, while he protested that the story had nothing to do with him.
• Hinatsuru ushered the madam out and explained that Su Chen had visited Kyogoku House to gather information, then doubled back to rescue Hinatsuru and the others.
• Shinobu understood Su Chen’s actions and felt reassured that he had returned home after completing his mission.

Shinobu Kocho and Shinazugawa learned that Su Chen had defeated several Upper Ranks, then prepared to leave the Entertainment District. Shinobu missed Su Chen as he traveled by train, exhausted and determined to protect the Butterfly Mansion while remaining human.

• Hinatsuru explained that Su Chen and Tengen Uzui had defeated Upper Rank Five, Upper Rank Six, and Upper Rank Four, leaving Shinazugawa stunned by Su Chen's strength.
• Hinatsuru told the Hashira that Tengen had left on another assignment, and Shinazugawa and Shinobu decided to return rather than stay in the Entertainment District.
• Shinobu asked Hinatsuru for Su Chen's route and tickets, then reminded her not to let Mr. Amane take Su Chen to the Kyogoku House again.
• Shinobu looked at the moon and admitted that she missed Su Chen while Shinazugawa quietly left her undisturbed.
• Su Chen sneezed aboard the train, asked an attendant for a blanket, and fell asleep after deciding to protect the Butterfly Mansion and avoid using Blood Demon Arts so he could remain human.

News of Su Chen’s survival and his defeat of three Upper Ranks spread through the Demon Slayer Corps, giving Kagaya Ubuyashiki and the Butterfly Mansion relief and hope. Kanao Tsuyuri was grateful for the news but resolved to become stronger.

• A crow brought Kagaya Ubuyashiki news that Su Chen had defeated three Upper Ranks, with Tengen helping him hold one off.
• Murata arrived at the Butterfly Mansion with a Dish Crow and announced that he had news about Su Chen.
• Kanao Tsuyuri snatched the Dish Crow and read its letter, which confirmed Su Chen was alive and had defeated three Upper Ranks.
• Aoi Kanzaki and the girls cried with relief, while Kanao reflected on how fear for Su Chen had driven her to eat and train.
• Kanao thanked Shinobu Kocho in her thoughts for promising to bring Su Chen back.

News that Su Chen had slain three Upper Ranks spread through the Demon Slayer Corps, inspiring its cultivators and Hashira while leaving Muzan furious. In the Infinity Castle, Muzan punished Akaza for Doma’s failure before demanding to see Doma’s drawing of the Blue Spider Lily.

• Sakonji Urokodaki, Jigoro Kuwajima, and Haganezuka learned that Su Chen had slain Upper Ranks, and Haganezuka resumed forging him a peerless blade.
• Muichiro Tokito, the Stone Hashira, Mitsuri Kanroji, the Serpent Hashira, and Tomioka Giyu received the news and reacted to Su Chen’s strength.
• Muzan summoned Kokushibo, Doma, and Akaza to the Infinity Castle and confronted Doma for failing to bring Su Chen back.
• Muzan crushed Akaza’s throat and injured him while reprimanding Doma, and Doma’s attempt to comfort Akaza made him spit blood in anger.
• After berating the demons, Muzan demanded that Doma show him the drawing of the Blue Spider Lily, and Doma produced it.

Muzan ordered the demons to search for the Blue Spider Lily, then Su Chen awoke aboard the Mugen Train and reunited with Tanjiro Kamado, Zenitsu Agatsuma, and Inosuke Hashibira. The chapter left the trio startled by Su Chen’s sudden appearance, with Inosuke wondering if he was hallucinating.

• Doma suggested using his followers to search for flowers that bloomed during the day, and Muzan ordered Doma, Akaza, Enmu, and Kokushibo to help find the Blue Spider Lily.
• Muzan sent Akaza to support Enmu and make him use his Blood Demon Art to control humans searching for the flower.
• Su Chen woke aboard the Mugen Train and realized its timing matched the events he remembered.
• Tanjiro Kamado, Zenitsu Agatsuma, and Inosuke Hashibira encountered Su Chen, while Nezuko Kamado remained inside Tanjiro’s box.
• Zenitsu mistook Su Chen for a ghost, and Inosuke defended him before wondering if he had hallucinated his master.

Su Chen reunited with Tanjiro, Zenitsu, Inosuke, and Kyojuro Rengoku aboard the Mugen Train, where Kyojuro confirmed that Su Chen had killed three Upper Ranks. Su Chen explained the demons’ abilities to the younger slayers and planned to learn their Breathing Styles when a fight began.

• Su Chen greeted Tanjiro, Zenitsu, and Inosuke aboard the train and told them how he had defeated three Upper Ranks, but they struggled to believe him.
• Kyojuro Rengoku arrived, confirmed the Demon Slayer Corps’ report, and explained Su Chen’s victories to the three youngsters.
• Zenitsu, Inosuke, and Tanjiro reacted with awe, while Su Chen felt awkward hearing Kyojuro praise him so earnestly.
• Su Chen planned to confront Akaza and Enmu and hoped to learn Water Breathing and Thunder Breathing by watching Tanjiro and Zenitsu fight.
• Su Chen spent the morning explaining Daki, Gyokko, and Hantengu’s abilities and weaknesses to the younger slayers.
• Kyojuro reflected that Su Chen must have endured great hardships, while Su Chen privately insisted that his victories had been straightforward.

After Nezuko Kamado startled everyone by lunging at Su Chen, Zenitsu began to unleash Thunder Breathing, prompting Su Chen to study his technique and develop a new Dragon Breathing form. The chapter ended with Su Chen charging forward with Thunder Dragon Breathing: First Form—Thunderclap Spark.

• Inosuke declared Su Chen his master, and Zenitsu argued with him over who was the senior disciple.
• Nezuko Kamado climbed out of Tanjiro’s wooden box and lunged at Su Chen, alarming Tanjiro and Zenitsu.
• Zenitsu began preparing to use Thunder Breathing, while Su Chen activated the Transparent World and studied his breathing and movements.
• Su Chen learned Thunder Breathing: Thunderclap and Flash, derived several related techniques, and created Thunder Dragon Form by combining it with Dragon Breathing.
• Su Chen entered Thunder Dragon Form and launched Thunder Dragon Breathing: First Form—Thunderclap Spark.

Su Chen stopped Zenitsu from attacking Nezuko Kamado, but she unexpectedly clung to Su Chen and licked his hand, prompting Zenitsu to challenge the Dragon Hashira. After the situation settled and Su Chen reassured Zenitsu that he was not angry, he said Zenitsu still deserved punishment for provoking a Hashira.

• Su Chen appeared beside Zenitsu in a burst of speed and assured him that he would not hurt Nezuko Kamado.
• Nezuko Kamado evaded Tanjiro and threw herself into Su Chen's arms, then licked his hand while Zenitsu protested.
• Tanjiro lifted Nezuko Kamado away, and Su Chen replaced her wooden tube and stopped her from drinking his blood.
• Zenitsu recovered his composure and feared that Su Chen would punish him for challenging a Hashira.
• Su Chen told Zenitsu he was not angry, then warned that publicly provoking a Hashira still called for punishment.

Su Chen and the others rode the Mugen Train as Enmu’s plan to draw them into dreams began. Su Chen chose not to stop the plan, hoping to see what dream Enmu would show him, and Kyojuro fell asleep just after proposing they keep watch.

• Su Chen told Zenitsu, Inosuke, and the others that they would take part in special training after returning to the Demon Slayer Corps, and Kyojuro expressed interest in Su Chen’s methods.
• As night fell, a strange attendant checked the passengers’ tickets, and Su Chen recognized him as the man Enmu had duped to plant a seed that would pull people into dreams.
• Su Chen concealed his suspicions, reasoning that confronting the attendant might let Enmu escape and that he wanted to experience his own dream.
• The passengers began falling asleep, and Tanjiro, Inosuke, and Zenitsu soon drifted off beside Su Chen.
• Kyojuro suggested that he and Su Chen keep watch for demons, then immediately fell asleep himself.