Chapter Summaries

Chinatsu survived Kokushibo’s devastating Moon Breathing attack and watched him enter his third phase, then used Sun Breathing’s Thirteenth Form to withstand his relentless crescent slashes and advance toward him. The fight continued as dawn approached.

• Kokushibo’s Sixteenth Form riddled Chinatsu with wounds, but her demon-like regeneration healed her as she continued fighting.
• Chinatsu’s comment about Kokushibo’s tragedy enraged him, and blades began growing from his body as he entered his third phase.
• Chinatsu readied her Demon Slayer Mark and Bright Red Nichirin Sword, then faced Kokushibo’s intensified attacks.
• Kokushibo unleashed several Moon Breathing forms in an unending barrage of crescent slashes.
• Chinatsu cycled through Sun Breathing’s First through Twelfth Forms as the Thirteenth Form, enduring wounds while advancing toward Kokushibo near dawn.

Chinatsu used Kokushibo’s obsession with Yoriichi to unsettle him, then pinned their weapons together as dawn approached. She left Kokushibo trapped in the sunlight’s path, though she refused to die alongside him.

• Chinatsu’s taunts kept Kokushibo off balance and made him overlook the approaching dawn.
• Chinatsu thrust her Bright Red Nichirin Sword into Kokushibo’s chest as he struck her with his Flesh Katana.
• Chinatsu gripped Kokushibo’s sword wrist and held both blades in place while his body blades wounded her.
• Kokushibo realized Chinatsu intended to keep him trapped until sunlight reached them and desperately tried to escape.
• Chinatsu pretended to accept dying with Kokushibo, but she resolved not to let him escape or accept her own death.

Chinatsu held Kokushibo in place as sunlight burned him, and he struggled to regenerate before confronting his lifelong envy of Yoriichi. Chinatsu offered him words of comfort as he stopped resisting and faced his impending death.

• Kokushibo struggled against Chinatsu's grip while Tanjiro and Mitsuri watched from beyond the barrage of Moon Breathing attacks.
• Sunlight reached Kokushibo, and his flesh failed to regenerate around the Bright Red Nichirin Sword lodged in his chest.
• Kokushibo remembered his childhood with Yoriichi and questioned why he had become a demon without ever reaching his brother's strength.
• Chinatsu told Kokushibo that the moon was unique too and urged him to atone, suggesting he and Yoriichi might speak again in hell.

Kokushibo accepted Chinatsu’s words and died peacefully in the sunlight after thanking her. Exhausted, Chinatsu collapsed after telling Tanjiro to collect Kokushibo’s blood, while Doma was summoned to the Infinity Castle and wondered why the other Upper Ranks had not arrived.

• Chinatsu’s words helped Kokushibo accept his fate, and he asked her name before thanking her and crumbling to dust in the sunlight.
• Chinatsu pointed Tanjiro to Kokushibo’s blood and told him the rest belonged to her, then collapsed from exhaustion.
• Mitsuri carried Chinatsu to a nearby house after Chinatsu briefly woke to ask to be isolated because she had caught a virus.
• Doma was summoned to the Infinity Castle and speculated that an Upper Rank had been killed, dismissing the possibility that Kokushibo had fallen.
• Doma waited with Nakime nearby but grew puzzled when none of the other Upper Ranks appeared.

Doma waited in the Infinity Castle while Muzan reacted violently to learning that a demon who had conquered sunlight was the successor of Yoriichi Tsugikuni. After Muzan told Doma that every other Upper Rank was dead, Doma asked whether he had become Upper Rank One, leaving the castle in silence.

• Doma questioned Nakime about the absent Upper Ranks and decided to look for answers himself.
• Muzan transformed into his true form and wrecked part of the Infinity Castle while deciding he must devour the sun-conquering demon before she grew stronger.
• Doma rushed toward Muzan and had his head destroyed by a stray whip, then regenerated after Muzan stopped rampaging.
• Muzan told Doma that all the other Upper Ranks were dead and that Doma was the only one left.
• Doma asked Muzan if Kokushibo's death automatically made him Upper Rank One, and silence fell over the Infinity Castle.

After the Swordsmith Village victory reached headquarters, the Hashira and Oyakata-sama reacted with relief and hope. Chinatsu woke from her coma and began investigating how to stop her Demon Slayer Mark from spreading, while Tanjiro continued training with Muichiro.

• Tengen Uzui and Sanemi Shinazugawa learned that the Swordsmith Village had slain three Upper Ranks, and Sanemi was relieved that Genya had survived.
• Gyomei Himejima and Sanemi Shinazugawa ended their sparring after hearing the victory report, while Kyojuro Rengoku continued training to reach the Transparent World.
• Oyakata-sama heard that three Upper Ranks had been slain and celebrated despite his worsening illness.
• Chinatsu woke at headquarters, worried that her Demon Slayer Mark could spread and shorten Gyomei Himejima’s life, and resolved to find a way to stop its resonance.
• Tanjiro sparred with Muichiro Tokito and pushed himself to become stronger.

After waking from nearly two months of unconsciousness, Chinatsu reassured Tanjiro that she had fixed the Demon Slayer Marks’ resonance problem and learned what had happened while she slept. Meanwhile, Zenitsu defeated a demon with ease and reached Jigoro Kuwajima’s house before dawn, where he overheard someone angrily asking why Zenitsu had mastered Thunder Breathing’s First Form.

• Chinatsu woke and told Tanjiro that the marks’ resonance problem was resolved and she was well.
• Tanjiro told Chinatsu that she had slept for nearly two months and explained what had happened while she was unconscious.
• Zenitsu beheaded a demon with Thunder Breathing’s First Form without falling asleep.
• Zenitsu hurried to Jigoro Kuwajima’s house and heard someone inside accuse Jigoro of deliberately making Zenitsu the Thunder Breathing successor.

Zenitsu confronted Kaigaku after discovering that his former senior had become a demon and attacked Jigoro Kuwajima. Zenitsu struck Kaigaku with Thunder Breathing and warned that his next strike would cut off his head.

• Zenitsu overheard Kaigaku accusing Jigoro Kuwajima of preventing him from learning Thunder Breathing’s First Form.
• Zenitsu entered the room and found Jigoro on the floor and Kaigaku transformed into a demon.
• Kaigaku mocked Zenitsu and attacked with Fourth Form: Distant Thunder, blasting apart part of the mansion wall.
• Zenitsu dodged Kaigaku’s black lightning and used First Form: Thunderclap and Flash-Godspeed to split Kaigaku’s head.
• Zenitsu stood ready to strike again and told Kaigaku that his next attack would cut off his head.

Zenitsu defeated Kaigaku with his self-created Seventh Form, Fire Thunder God, and said farewell to him as he vanished. At dawn, Chinatsu began teaching Tanjiro how to perform the first twelve forms of Hinokami Kagura in a continuous cycle to prepare for the battle with Muzan.

• Kaigaku attacked Zenitsu and Jigoro Kuwajima with five Thunder Breathing forms, but failed to injure them.
• Zenitsu used his self-created Thunder Breathing, Seventh Form: Fire Thunder God, to sever Kaigaku's neck.
• Zenitsu told Kaigaku that he had created the technique himself, and Kaigaku crumbled without repenting.
• Zenitsu said farewell to Kaigaku, and dawn broke.
• Chinatsu joined Tanjiro for training and explained that his progress sustaining Hinokami Kagura had slowed.
• Chinatsu began teaching Tanjiro to perform the first twelve forms consecutively as the Thirteenth Form.

Tanjiro trained in Sun Breathing’s thirteenth form while Chinatsu sparred with him, and the two visited Tamayo to deliver Kokushibo’s blood for her research against Muzan. The reunion ended with Tamayo preparing to study Chinatsu’s blood as well, after Tanjiro revealed he had collected several full test tubes of it.

• Tanjiro practiced cycling through the first twelve Sun Breathing forms as the thirteenth form, improving through training and sparring with Chinatsu.
• Chinatsu led Tanjiro to Tamayo’s hidden residence in Asakusa, where Tamayo and Yushiro welcomed them.
• Tanjiro gave Tamayo a test tube of Kokushibo’s blood, and Tamayo eagerly accepted it for her research.
• Tamayo promised Chinatsu that she would succeed in developing a drug against Muzan, then prepared to take a sample of Chinatsu’s blood.
• Tanjiro revealed several full test tubes of Chinatsu’s blood that he had collected, leaving Tamayo and Chinatsu stunned.

Chinatsu and Tanjiro returned to headquarters after giving Tamayo a large supply of Chinatsu’s blood, while Muzan ordered his weaker demons to find the Corps or Chinatsu. Kyojuro Rengoku completed his training and awakened the Transparent World.

• Chinatsu gave Tamayo many test tubes of her blood, then left with Tanjiro and returned to headquarters before dawn.
• Muzan ordered his weaker demons to prove their worth within a year by searching for the Demon Slayer Corps headquarters or Chinatsu.
• Chinatsu went to sleep after returning, while Tanjiro set out to find Inosuke.
• Kyojuro meditated for dozens of hours, aligning Total Concentration Breathing with his body to reach the Transparent World.
• Kyojuro opened his eyes and saw through the muscles and blood vessels of the world around him, realizing he had succeeded.

Kyojuro told Chinatsu he had mastered the Transparent World, and she went with him to the training ground, where Sanemi thanked her for saving Genya. Chinatsu asked Sanemi for some of his rare blood, and he prepared to give it to her.

• Kyojuro told Chinatsu he had grasped the Transparent World, and she congratulated him.
• Chinatsu and Kyojuro went to find Gyomei and found the Hashira, Tanjiro, and Inosuke training.
• Sanemi defeated Inosuke in their sparring match and told him to train harder.
• Sanemi thanked Chinatsu for saving Genya, and Chinatsu asked him for some of his rare blood.
• Sanemi drew his Nichirin Blade and asked Chinatsu how much blood she needed.

Chinatsu went with Sanemi to Shinobu Kocho’s mansion and received two portions of his rare blood. Back at her mansion, she drank one portion to try to awaken a Blood Demon Art, risking the balance between her human and demon sides.

• Chinatsu and Sanemi went to Shinobu Kocho’s mansion so she could obtain a container for his rare blood.
• Nezuko rushed out to greet Chinatsu, and Shinobu Kocho supplied a test tube for drawing Sanemi’s blood.
• Shinobu Kocho drew Sanemi’s blood, and Chinatsu accepted two portions while promising to repay his kindness.
• Chinatsu stored one portion of the rare blood and drank the other, hoping to awaken a Blood Demon Art.

After drinking Sanemi Shinazugawa’s rare blood, Chinatsu was overwhelmed by bloodlust and struggled to keep from becoming a demon or harming her family. In her inner world, Tsugikuni Michikatsu stopped her from being swallowed by a dark swamp, and Yoriichi Tsugikuni appeared beside him.

• Chinatsu drank Sanemi Shinazugawa’s rare blood and was seized by intense bloodlust.
• Chinatsu locked herself in her room, barricaded the door, and left a note asking not to be disturbed.
• Chinatsu recalled Sanemi’s mother becoming a demon and resolved to hold on to her reason, but she eventually lost consciousness as the bloodlust urged her to drink.
• In her inner world, Chinatsu wandered toward a muddy swamp that threatened to consume her.
• Tsugikuni Michikatsu appeared and brought Chinatsu back to her senses before she fell into the swamp.
• Yoriichi Tsugikuni appeared beside Michikatsu and said their time was limited.

Chinatsu met Yoriichi Tsugikuni and reconciled with Tsugikuni Michikatsu in the afterlife, where Michikatsu entrusted her with destroying Muzan. Back in the human world, Chinatsu resolved to grow stronger and trained through the night, leaving her asleep at the training grounds by morning.

• Yoriichi Tsugikuni appeared before Tsugikuni Michikatsu, and the brothers reconciled after more than four hundred years apart.
• Tsugikuni Michikatsu gave Chinatsu Kamado a vision and asked her to destroy Muzan, and Chinatsu accepted the task.
• Yoriichi Tsugikuni recognized Chinatsu as a descendant of Sumiyoshi Kamado and said she had inherited all he could offer through his Sun Breathing and swordsmanship.
• As their time in the afterlife ended, Tsugikuni Michikatsu went to hell, Yoriichi Tsugikuni chose reincarnation, and Chinatsu returned to the human world.
• Chinatsu left the sleeping Tanjiro and Nezuko and trained with her Nichirin Blade through the night.
• The next morning, the Demon Slayer Corps members found Chinatsu asleep against a tree amid sword marks in the ground.

The Pillars discovered Chinatsu asleep after she trained through the night, then practiced together while letting her rest. When Chinatsu woke around noon, she noticed Giyu Tomioka training alone and headed over to join him.

• The Pillars found Chinatsu sleeping beneath a tree with her Nichirin Blade and quietly admired her.
• Kyojuro Rengoku said Chinatsu had described a realm opposite to the Transparent World, while Gyomei Himejima and Kyojuro had both mastered the Transparent World through practice.
• The Pillars moved to the far end of the training area and began their morning training so they would not wake Chinatsu.
• Tanjiro followed Chinatsu's scent to the training area, saw her sleeping, and joined the others without disturbing her.
• Chinatsu woke around noon, saw the Pillars training and Giyu Tomioka practicing alone, and hurried over to join him.

Chinatsu confronted Giyu Tomioka about his guilt over Sabito’s death and claimed that Sabito had spoken to her, shocking him. When Giyu raised his guard, Chinatsu attacked with Moon Breathing, leaving their clash unresolved.

• Giyu Tomioka practiced Water Breathing alone and tried to refine his Eleventh Form, Dead Calm.
• Chinatsu approached Giyu and asked whether he isolated himself because he felt unworthy after Sabito died during Final Selection.
• Chinatsu claimed Sabito had told her about Giyu, and Giyu angrily insisted that Sabito was dead.
• Chinatsu unleashed Moon Breathing, Seventh Form: Calamitous Mirror, Moon's Reflection, against Giyu's Dead Calm.

Chinatsu used Moon Breathing to confront Giyu and reminded him of Sabito’s words, helping him accept his place as the Water Hashira. A month of group training passed, and the chapter ended with Shinobu telling Chinatsu that the Muzan-targeting Poison was ready.

• Chinatsu knocked Giyu back with Moon Breathing, then urged him to stop believing he did not deserve to be the Water Hashira.
• Chinatsu repeated Sabito’s message to Giyu, reviving his memories and helping him overcome his guilt.
• Chinatsu invited Giyu to spar, and he officially joined the Demon Slayer Corps’ group training.
• The Hashira and other Demon Slayers trained together for a month while Muzan’s demons searched for the Corps’ headquarters or information on Chinatsu.
• Shinobu visited Chinatsu and whispered that the Muzan-targeting Poison was finished.

Chinatsu learned that Tamayo and Shinobu Kocho had completed the four-part Ultimate Poison and rushed to Tamayo's mansion to see it. Tamayo asked to join the attack on Muzan, but Chinatsu refused because she feared Tamayo would sacrifice her life.

• Shinobu Kocho explained how the Ultimate Poison's four drugs could weaken Muzan and revealed that Tamayo had completed it.
• Chinatsu hurried from Demon Slayer Corps Headquarters to Tamayo's mansion in Asakusa and entered after Yushiro opened the door.
• Tamayo led Chinatsu to her laboratory, where Chinatsu examined the finished Ultimate Poison and congratulated her.
• Tamayo asked to witness Muzan's death in person, but Chinatsu refused and said she did not want Tamayo to die.

Chinatsu reassured Tamayo that she would defeat Muzan without sacrificing anyone, then returned to the Demon Slayer Corps Headquarters with the ultimate poison. Finding Oyakata-sama gravely weakened, she decided the Corps had to begin its counterattack now.

• Tamayo confessed that becoming a demon had led her to kill her husband and children, and offered to sacrifice herself to defeat Muzan.
• Chinatsu insisted that nobody would die in the fight and urged Tamayo to keep living until she could die naturally as a human.
• Chinatsu left Yushiro to comfort the tearful Tamayo and carried the ultimate poison back to the Demon Slayer Corps Headquarters.
• At the training grounds, Chinatsu saw Giyu Tomioka and Sanemi Shinazugawa sparring with real blades but continued on to Oyakata-sama's mansion.
• Chinatsu found Oyakata-sama weaker than before and declared that the time had come to begin the counterattack against Muzan.