Chapter Summaries

Kanao gave Su Chen her coin in exchange for learning a Breathing Style, while Kagaya Ubuyashiki prepared Corps equipment for him ahead of his match with Shinazugawa. After learning that Kyojuro had mastered a new move taught by Su Chen, Shinazugawa began to take Su Chen more seriously but refused to ask him about awakening his Demon Slayer Mark.

• Kanao returned the coin Kanae had given her, then offered it to Su Chen as payment for Breathing Style lessons, and Su Chen began teaching her Rafflesia Breathing.
• Lady Amane read Kyojuro's letter to Kagaya Ubuyashiki, who praised Su Chen and told her to prepare a Corps uniform and Nichirin Blade for him.
• Shinazugawa repeatedly practiced Wind Breathing's Fifth Form while trying to awaken his Demon Slayer Mark.
• Obanai Iguro reminded Shinazugawa that his match with Su Chen was the next day and told him Kyojuro had used a strange flame-producing move taught by Su Chen.
• Shinazugawa was stunned to hear about Su Chen's skill, but refused Obanai's suggestion that he visit the Butterfly Mansion to ask about awakening his mark.

Obanai urged Shinazugawa to ask Kocho about Su Chen, while Inosuke returned to the Butterfly Mansion and mistook Su Chen’s Bee Breathing practice for giant hornet movements. Shinobu Kocho came back exhausted and tried to avoid Su Chen, but he greeted her before she could slip away.

• Obanai suggested Shinazugawa ask Kocho about Su Chen, but Shinazugawa refused to go to the Butterfly Mansion.
• Inosuke returned to the Butterfly Mansion, saw Su Chen practicing, and charged at him after recognizing movements like those of a giant hornet.
• Su Chen used Bee Breathing, Eighth Form: Blood Demon Bee Fang, and Inosuke fell asleep in the nearby bushes.
• Shinobu Kocho returned to the crowded Butterfly Mansion and evaded Aoi Kanzaki’s question about funding.
• Shinobu tried to head to the laboratory to avoid Su Chen, but he greeted her as soon as she entered.

Su Chen tried to help Shinobu Kocho, who was avoiding him, and discovered she was worried about money. Shinazugawa came to ask Shinobu about awakening the Demon Slayer Mark, and she teased him for needing Su Chen’s help.

• Su Chen accidentally stepped on Shinobu Kocho’s feet, making her blush, then learned that Kanao was chatting with the swordsmith after her Nichirin Blade was repaired.
• Su Chen asked Shinobu to replace his wooden sword with a Nichirin Blade, but her troubled reaction suggested she was short on money.
• After Su Chen went to get water, Shinobu tried to slip away to the basement, but Shinazugawa blocked her path.
• Shinazugawa told Shinobu he wanted help awakening his Demon Slayer Mark, and she mocked him for failing to use the method Su Chen had already explained.

Shinazugawa tried to provoke Su Chen into a spar, but Shinobu Kocho stopped him from fighting in the Butterfly Mansion. Inosuke then charged Su Chen and challenged him to a barehanded fight.

• Shinazugawa left after Shinobu Kocho embarrassed him in front of the injured Demon Slayer Corps members.
• Shinazugawa drew his Nichirin Blade and prepared to test Su Chen, but Shinobu Kocho interrupted him and reminded him that the Butterfly Mansion had been established by Kanae Kocho.
• Shinazugawa apologized and put away his blade, while Shinobu Kocho soothed the onlookers with an apology.
• Inosuke suddenly charged Su Chen, ignoring Aoi Kanzaki's warning that he was there.
• Su Chen dodged Inosuke's Headlong Rush, and Inosuke set down his swords and challenged him to fight barehanded.

Su Chen fought Inosuke and used his attacks to develop the Free and Unfettered Body Technique. He defeated Inosuke, while Shinazugawa recognized Su Chen’s extraordinary talent.

• Inosuke charged at Su Chen, and Su Chen dodged while studying his beast-like movements.
• Su Chen activated Bullet Domain and learned Inosuke’s movement patterns, creating the Free and Unfettered Body Technique.
• Su Chen used his new technique to evade Inosuke’s attacks and struck him from an unexpected angle by dislocating his leg joints.
• Shinazugawa realized Su Chen had learned and countered Inosuke’s techniques during the fight, and judged his talent comparable to Tokito’s.
• Inosuke charged again, but Su Chen read his movements and kicked him down, knocking off his mask.

Inosuke challenged Su Chen, but Kanao Tsuyuri intervened with a powerful sword technique and injured him. After Kanao checked on Su Chen, Shinobu Kocho noticed their closeness and confronted them with a pointed remark.

• Su Chen approached Inosuke, who challenged him to another fight with his Nichirin Blades.
• Kanao Tsuyuri intercepted Inosuke with Overlord Flower Breathing Style, Sixth Form-Overlord Vortex Peach and sent him crashing into a tree.
• Aoi Kanzaki restrained the injured Inosuke and scolded him as he insisted he still wanted to fight Su Chen.
• Kanao landed in front of Su Chen, checked that he was unharmed, and shyly accepted his head pat.
• Shinobu Kocho saw Kanao's closeness with Su Chen, felt jealous, and remarked that he was impressive.
• Kanao blushed when she noticed Shinobu and asked what her master was doing there.

Shinazugawa resisted asking Su Chen for advice, but Kyojuro Rengoku praised Su Chen as strong enough to teach a Hashira. The chapter ended with Rengoku revealing he had come to learn, and everyone realizing he meant to learn from Su Chen.

• Shinobu Kocho teased Shinazugawa about asking Su Chen for advice, and Shinazugawa insisted that only a Hashira could teach a Hashira.
• Kyojuro Rengoku arrived and praised Su Chen's improvement after watching him spar.
• Su Chen led Rengoku toward the house to treat his leg, but Shinazugawa challenged Rengoku about agreeing with his argument.
• Rengoku said Su Chen had the strength of a Hashira and could teach, while Shinazugawa objected that Su Chen had not earned his approval.
• Rengoku refused Shinazugawa's request for help and announced that he had come to learn, prompting everyone to look at Su Chen.

Su Chen tried to avoid teaching Kyojuro Rengoku more Blazing Breathing, but Kyojuro openly praised him and asked for further instruction. After Oyakata-sama’s messenger crow announced Su Chen would receive Hashira-rank clothing and a Nichirin Blade, Shinobu Kocho dragged Shinazugawa over to ask Su Chen for pointers.

• Su Chen tried to slip into the Butterfly Mansion, but Shinobu Kocho caught him and brought him back to Kyojuro Rengoku.
• Kyojuro praised Su Chen’s skill and admitted he had learned only one Blazing Breathing form, so he had returned for help.
• Shinobu Kocho’s messenger crow announced that Oyakata-sama had ordered Hashira-rank clothing for Su Chen and would send him a Nichirin Blade the next day.
• Shinazugawa tried to leave, but Shinobu took his sword and pulled him toward Su Chen, insisting he had been going the wrong way.
• Shinazugawa reached Su Chen ahead of Shinobu, and the onlookers concluded he had only hesitated because he felt awkward asking for pointers in front of everyone.

Shinazugawa struggled to ask Su Chen about awakening the Demon Slayer Mark, and Su Chen offered to teach him if he won a competition. They had not yet agreed on a contest as Shinobu Kocho discreetly appreciated Su Chen's attempt to spare her from paying for rice balls.

• Shinazugawa stayed silent while Shinobu Kocho and Kyojuro urged him to speak.
• Su Chen guessed that Shinazugawa wanted to know how to awaken the Demon Slayer Mark and offered to teach him in exchange for winning a wager.
• Inosuke excitedly proposed a fight, but Aoi Kanzaki struck him and Shinobu Kocho rejected fighting near the Butterfly Mansion.
• Kyojuro suggested a rice ball eating contest, but Su Chen refused because he disliked rice balls.
• Shinobu Kocho realized Su Chen had noticed she had no money and privately felt grateful and embarrassed.

Su Chen proposed a rescue contest at the Butterfly Mansion, and Shinobu Kocho set out its three stages: bringing in wounded patients, helping treat them, and assisting their rehabilitation. Su Chen wagered that if he won, Shinazugawa would register his Hashira status with the Butterfly Mansion, and Kyojuro revealed that doing so would commit Shinazugawa’s share of Corps funding.

• Su Chen suggested holding a rescue contest at the Butterfly Mansion, and the others agreed to consider it.
• Shinobu Kocho outlined three stages for the contest, and Su Chen helped refine the rules.
• Su Chen invited Shinobu Kocho to make a request for the wager, but she declined.
• Su Chen said Shinazugawa would register his Hashira status with the Butterfly Mansion if Su Chen won, while remaining free to travel.
• Kyojuro explained that registering there would commit Shinazugawa’s personal share of the Demon Slayer Corps’ monthly funding, leaving Shinazugawa stunned.

Su Chen, Sanemi Shinazugawa, Kyojuro Rengoku, and Inosuke Hashibira began a two-hour rescue competition at the Butterfly Mansion. Inosuke struggled to collect patients as the Hashira snatched them away, while Su Chen watched from above.

• Sanemi Shinazugawa, Kyojuro Rengoku, and Inosuke Hashibira joined Su Chen's wager, and the four became the competition's contestants.
• Shinobu Kocho explained the rules: contestants earned points for bringing patients to the mansion, had two hours, and surrendered their Nichirin Blades before starting.
• Shinobu Kocho declared the competition underway, and the four contestants raced out to find injured Demon Slayer Corps members.
• Inosuke Hashibira charged toward a patient, but Kyojuro Rengoku reached the man first and carried him away.
• Sanemi Shinazugawa knocked Inosuke Hashibira into roadside bushes as he tried to reach another patient, leaving Inosuke confused about what had hit him.
• Nearly an hour later, the two Hashira had swept up the injured people nearby, while Su Chen surveyed the area from the highest point of the Butterfly Mansion.

Su Chen used Bullet Domain to survey the mountain and spotted injured Demon Slayers and a village below, then left the competition route to investigate. He found a building packed with people wounded by demons and met Murata, who explained that demons had attacked the village the previous night.

• Su Chen activated Bullet Domain from the mansion roof, locating injured Demon Slayers on the mountain and a village with medicinal herbs below.
• Shinobu Kocho, Kanao Tsuyuri, and Aoi Kanzaki watched Su Chen disappear from the roof while Shinazugawa and Kyojuro continued bringing patients back.
• Su Chen followed his discovery down the mountain and entered a building filled with injured people, including Demon Slayer Corps members.
• Su Chen recognized Murata, and Murata confirmed that demons had injured the people in the village the previous night.

Su Chen arranged for the wounded villagers to receive treatment at the Butterfly Mansion in exchange for money or medicinal herbs, then led them up the mountain. He noticed the village chief had secretly removed his blindfold and decided the man could not be allowed to reach the Mansion.

• Murata explained that a demon attack had injured many villagers, while the local doctor lacked the skill and capacity to treat them.
• Su Chen proposed taking the wounded to the Butterfly Mansion, and the villagers agreed to contribute money or medicinal herbs for treatment.
• Su Chen and Murata organized the villagers into blindfolded lines and led them up the mountain with Demon Slayer Corps members guarding them.
• Su Chen caught the village chief secretly replacing his slipped blindfold and suspected the man posed a risk to the Butterfly Mansion.
• Su Chen halted the group after deciding he could not let the village chief reach the Mansion.

Su Chen kept the villagers together by sending the village chief and a barefoot doctor back, then had Murata follow them after noticing the chief’s resentment. As the competition neared its end, Su Chen returned to the Butterfly Mansion with a huge, blindfolded crowd of injured people, leaving Shinazugawa and the others stunned.

• Su Chen persuaded the villagers to send the village chief back with the barefoot doctor, then asked Murata to follow them after spotting resentment in the chief’s eyes.
• Shinazugawa led the scoreboard with nine points, ahead of Kyojuro’s eight and a half, while Inosuke’s score fell to negative ten after he deliberately injured a Corps member.
• Shinazugawa urged Shinobu Kocho to end the competition, but she reminded him he still needed Su Chen to ask about the Demon Slayer Mark.
• As the time limit ran out, Su Chen arrived with a large crowd of injured people wearing blindfolds and carrying copper coins, shocking everyone at the Butterfly Mansion.

Su Chen brought a crowd of injured villagers to the Butterfly Mansion, where Shinobu Kocho and Aoi Kanzaki collected payment and arranged their treatment. After Su Chen organized the chaotic admissions, Shinobu thanked him, then punched him when he teased her.

• Su Chen led the blindfolded villagers to the Butterfly Mansion and told them to follow the nurses’ instructions and pay for treatment.
• The villagers crowded Shinobu Kocho with copper coins, overwhelming her until she and Aoi Kanzaki opened separate checkout counters.
• Shinazugawa, Kyojuro, and Inosuke watched Su Chen’s success and accepted that he had won their contest.
• Su Chen gained insights into human resource management and devised a registration, payment, and treatment system that sorted villagers into a queue.
• The villagers paid with copper coins or medicinal herbs, and Shinobu Kocho thanked Su Chen before punching him for teasing her.

Su Chen dominated the first stage of the Rescue Competition with 199 points, then Shinobu Kocho began the treatment-based second stage at the Butterfly Mansion. Inosuke was knocked down before he could reach the easy cases, while Su Chen left the others to compete for them and prepared to act as a doctor.

• Shinobu Kocho announced the first-stage scores: Su Chen had 199 points, Sanemi Shinazugawa had 9, Kyojuro Rengoku had 8.5, and Inosuke had -10.
• Shinobu Kocho led the competitors into the Butterfly Mansion and explained that they would earn one point for every patient they helped cure across four departments.
• Inosuke spotted the minor injuries in the Surgery room and rushed toward them, but Kyojuro Rengoku overtook him after following his lead.
• Sanemi Shinazugawa crashed into Inosuke, breaking a bone and sending his boar mask flying.
• Inosuke fell into despair, while Su Chen watched the others pursue the easy cases and chose not to join them because he was a doctor.

Su Chen joined Shinobu Kocho and Aoi Kanzaki in the gynecology room, where patients quickly flocked to his line and teased Shinobu about their relationship. The chapter ended with Su Chen examining a man with a broken leg and asking Shinobu for the precise supplies she had identified as necessary.

• Su Chen changed into his doctor’s clothes and joined Shinobu Kocho and Aoi Kanzaki in the gynecology room to help treat patients.
• Shinobu Kocho introduced Su Chen as a Butterfly Mansion doctor, and Aoi Kanzaki praised his treatments, drawing patients to his line.
• The village women teased Shinobu Kocho about her feelings for Su Chen, leaving her visibly blushing as she treated patients.
• The patients abandoned Shinobu Kocho’s line and gathered behind Su Chen after watching him bandage a woman with impressive speed and precision.
• Two men brought in a patient with a broken leg, and Su Chen examined the injured man using Bullet Domain.
• Su Chen asked Shinobu Kocho for alcohol and medicinal herbs, naming the same supplies she had determined were needed during her diagnosis.

Su Chen treated the injured villagers and Demon Slayer Corps members at the Butterfly Mansion, rapidly improving his medical skills and finishing with 198 points. Shinobu Kocho realized his lead had settled the rescue contest, while Kyojuro Rengoku and Sanemi Shinazugawa continued working in pediatrics.

• Shinobu Kocho and Aoi Kanzaki gathered the ingredients Su Chen needed, and Su Chen healed a villager's injured leg.
• Su Chen treated Inosuke's broken bones and bandaged his chest with a decorative bow.
• Su Chen treated patients alongside Shinobu Kocho and Aoi Kanzaki, while Kanao Tsuyuri recorded his score and his medical skills advanced.
• Village women teased Shinobu Kocho about Su Chen, and Shinobu fled with a Butterfly Dance.
• Su Chen finished treating the patients, and Shinobu Kocho saw that he had scored 198 points, ahead of Sanemi Shinazugawa's 18 and Kyojuro Rengoku's 17.

After winning the first two rehabilitation contests by a wide margin, Su Chen proposed new rules for the final round that allowed custom exercises, interference, and Breathing Styles. He hoped to learn Wind Breathing from Shinazugawa, but Shinazugawa overheard Shinobu Kocho’s whispered offer to arrange lessons, leaving Shinobu furious.

• Shinobu Kocho learned that Aoi Kanzaki and Kanao had given Inosuke a point for healing, leaving him with a score of -9.
• Shinazugawa saw Su Chen’s 198-point score and demanded a third round despite trailing by more than three hundred points.
• Su Chen proposed that contestants design rehabilitation exercises and compete by positive reviews, with interference and Breathing Styles allowed.
• Shinobu Kocho warned Su Chen that his opponents could stop him from finishing, while Shinazugawa realized he could use the new rules to his advantage.
• Shinobu Kocho quietly offered to arrange for Su Chen to learn Wind Breathing, but Shinazugawa overheard and loudly repeated her words.
• Shinobu Kocho glared at Shinazugawa, and Su Chen took her hand.

Shinazugawa offered to make Su Chen his Tsuguko, but Su Chen claimed he could learn Wind Breathing after one demonstration, and Kyojuro backed up his remarkable skill. As Shinazugawa prepared for the final Rehabilitation Training match, Su Chen taunted him and Shinobu Kocho stepped in to explain the rules.

• Shinazugawa offered to teach Su Chen Wind Breathing and take him on as his Tsuguko so he could observe Su Chen's Demon Slayer Mark.
• Su Chen denied wanting to learn from Shinazugawa and said he could learn Wind Breathing after watching it once.
• Kyojuro confirmed that Su Chen had learned Flame Breathing in one demonstration, improved it, cured his leg condition, and created Blazing Breathing.
• Shinazugawa challenged Su Chen to begin the final round, and Shinobu Kocho explained that Rehabilitation Training involved helping patients recover through exercises and games.
• Su Chen pointed out Shinazugawa's deficit of over three hundred points and offered him a chance to change the rules, while Shinobu Kocho stopped Shinazugawa from erupting.
• Shinobu Kocho blushed after Su Chen gave her a warm smile.