Chapter Summaries

After receiving his custom Nichirin Blade, Meikyō was summoned on a demon-slaying mission and sent a Shadow Clone to investigate the Kamado family. He followed his Kasugai Crow toward a haunted house while considering how to help the Demon Slayer Corps and prepare for Muzan’s future attack.

• Meikyō tested his red-and-blue-gold Nichirin Blade, thanked Tetsuana Kōzō, and watched the swordsmith leave for the Swordsmith Village.
• A Kasugai Crow summoned Meikyō for a mission, and he secretly sent a Shadow Clone toward Mount Sagiri to check whether Tanjiro had arrived and investigate the Kamado family.
• Meikyō decided not to approach the Kamado family during the coming winter because he lacked confidence against Muzan and Kokushibo, and he resolved to complete his mission and help the Demon Slayer Corps.
• Matsuchiro told Meikyō to head southeast to the Mountain Village Haunted House, and Meikyō urged the crow to fly faster.

Meikyō searched unsuccessfully for the Kamado family and encountered Oyakata Amane, who told him she had found the Tokito clan, descendants of Tsugikuni Yoriichi. After learning that demons might be active near their mountain home, Meikyō considered a more direct way to bring the two brothers into the Demon Slayer Corps.

• Meikyō reflected that he had searched the area for the Kamado family but found no information about them.
• Meikyō met Oyakata Amane in town and learned she had located the descendants of Tsugikuni Yoriichi.
• Oyakata Amane explained that the Tokito clan had become two brothers who lived by chopping wood, and that the older brother refused to come down the mountain.
• Oyakata Amane said people had recently gone missing near the Tokito family’s mountain and suspected demons were active there.
• Meikyō suggested that the Tokito brothers should be brought down by force rather than persuaded at length.

Meikyō rescued the Tokito twins from a demon attack and began taking them down the mountain, while Oyakata Amane learned he had received an urgent lead related to the Ancestral Breathing Technique. Ichiro watched Meikyō disappear and wondered whether he could become a Hashira to protect Muichiro.

• Matsuchiro warned Meikyō that a demon was attacking the Tokito family on Little Brushwood Mountain, and Meikyō hurried there ahead of Oyakata Amane.
• Tokito Yuichiro tried to protect Muichiro from the demon, but the demon broke into their cabin and injured Muichiro before Meikyō killed it with Flame Breathing, First Form: Unknowing Fire.
• Meikyō treated Yuichiro's shoulder and insisted that the twins come down the mountain with him, and Yuichiro agreed.
• Oyakata Amane met Meikyō and the twins on the mountain path, then took the twins with her after Meikyō said he had something important to investigate related to the Ancestral Breathing Technique.
• After Meikyō vanished, Oyakata Amane told Ichiro that he would soon become a Hashira, and Ichiro wondered if he could become strong enough to protect Muichiro.

Uchiha Meikyō reached the Kamado family home and asked Tanjiro about the Dance of the Fire God, believing it could help save many people. Tanjiro explained the dance’s twelve forms and how his father had passed them on, while Meikyō remained intent on getting the family off the mountain before nightfall.

• Uchiha Meikyō traveled through the snowy mountains after his Shadow Clone found the Kamado family.
• Kie welcomed Meikyō and explained that Tanjiro had inherited the Dance of the Fire God from his late father, Tanjuro.
• Meikyō offered money to Tanjiro, but Kie brought them inside to escape the snow.
• Tanjiro questioned Meikyō about his interest in the dance and warned him to leave once the snow stopped.
• Tanjiro described the dance’s twelve forms, the breathing methods and strange sensation his father had taught him, and his difficulty performing the forms continuously.

Uchiha Meikyō learned the Dance of the Fire God from Tanjiro and insisted that the Kamado family leave their mountain home because of demons. After knocking Tanjiro unconscious and bringing the family down the mountain, Meikyō prepared to move them to safety before nightfall.

• Meikyō watched Tanjiro perform the Dance of the Fire God and memorized its forms with his Sharingan.
• Tanjiro rejected Meikyō's claims about Sun Breathing and demons, so Meikyō knocked him unconscious and pressured Kie to leave with him.
• Kakushi arrived with handcarts to pack the Kamado family's belongings, while Kochō Shinobu learned that Meikyō had also inherited the Dance of the Fire God.
• Shinobu apologized to Kie for Meikyō's forceful behavior and reassured her that they meant no harm.
• Meikyō ordered the group to leave before nightfall to protect the Kamado family from a demon attack.

After returning to the Butterfly Mansion, Tanjiro learned about Muichiro’s encounter with Meikyō, while Yuichiro began sword training with Shinazugawa Sanemi. At the Hashira meeting, Tomioka Giyuu provoked a confrontation before Meikyō explained how he had traced the Ancestral Breathing Technique to Sun Breathing.

• Tanjiro asked Muichiro about demons and learned that Meikyō had saved him and his brother with a flaming sword.
• Yuichiro insisted on learning swordsmanship to protect his little brother, so Shinazugawa Sanemi taught him the basics and demanded a thousand practice swings.
• Ubuyashiki Kagaya convened an early Hashira meeting after the discovery of descendants of the original swordsmen and inheritors of the Ancestral Breathing Technique.
• Tomioka Giyuu questioned why Meikyō was attending a Hashira meeting, prompting Shinazugawa Sanemi and Iguro Obanai to surround him.
• Meikyō explained that his study of the five basic Breathing styles led him to investigate their common origin, and that records from Kyōjurō’s Flame Hashira lineage revealed traces of Sun Breathing.

Meikyō explained Sun Breathing to the Hashira and encouraged them to learn from its techniques, then returned to Konoha and caught up on village events. He visited Uchiha Yu, who challenged him to demonstrate the sword style he had been developing.

• Meikyō told the Hashira that Sun Breathing was exceptionally powerful but difficult to master, and that they could still use its techniques to improve their own styles.
• The Hashira eagerly agreed to try learning Sun Breathing as time passed.
• Meikyō returned to his home in Konoha and learned about recent events, including Kakashi enrolling in the academy and Dan Katō and Tsunade preparing to marry.
• Meikyō visited Uchiha Yu and explained that he had been researching ninjutsu and swordsmanship to develop a new sword style.
• Uchiha Yu criticized Meikyō for pursuing a new style and took him to the training ground to demonstrate it.

Uchiha Yu watched Meikyō demonstrate his Flame Breathing swordsmanship and claimed it was an inheritance from Kagami to conceal the technique’s true origin. After Uchiha Yashiro’s patrol left, Meikyō explained why he needed to avoid drawing too much attention.

• Meikyō demonstrated his Flame Breathing forms for Uchiha Yu, culminating in a powerful strike that split the ground.
• Uchiha Yu recognized the swordsmanship’s strength but noticed Meikyō took too long to prepare each move.
• Uchiha Yashiro and the Police Force arrived to investigate the commotion, and Uchiha Yu told them Meikyō was learning Kagami’s secret sword technique.
• Uchiha Yashiro considered Meikyō’s future influence and decided he should choose a side soon.
• Uchiha Yu asked Meikyō why he had said what he did, and Meikyō replied that he was already conspicuous and did not want to attract more attention.

Uchiha Yu gave Meikyō the Mirror Body Flicker Technique scroll and began teaching him the sealing fundamentals needed to master it. Meanwhile, Danzo warned Hiruzen Sarutobi that Meikyō was a dangerous talent and urged him to assign the boy to Root.

• Uchiha Yu explained how Kagami developed the Mirror Body Flicker Technique and told Meikyō he would first need to learn the Mirror Clone and sealing techniques.
• Meikyō eagerly began studying the scroll, and Uchiha Yu offered to teach him the Uchiha Flame Formation and the fundamentals of sealing.
• News of Meikyō's powerful attack spread, and Uchiha Fugaku visited Uchiha Yu and Meikyō to discuss it.
• Danzo brought Hiruzen Sarutobi a report about Uchiha Yu's rumored strength, but Hiruzen dismissed the claims as exaggerated.
• Danzo showed Hiruzen Meikyō's file and argued that the twelve-year-old, who had a Three Tomoe Sharingan and Jonin-level strength, should be placed in Root under his control.

Hiruzen rejected Danzo’s demand to recruit Meikyō into Root and considered using him to balance Danzo and Orochimaru. Meikyō continued studying sealing techniques and went to Dan’s wedding with a bouquet of wisteria.

• Danzo argued that Meikyō’s talent and Uchiha ties made him a future threat, but Hiruzen refused to let Root recruit him.
• After Danzo stormed out, Hiruzen worried about Danzo and Orochimaru’s growing influence and considered cultivating another faction.
• Meikyō learned basic sealing symbols and mastered the One-Thread Lantern Formation under Uchiha Yu’s guidance.
• On the wedding day, Meikyō bought wisteria at a Yamanaka Clan flower shop, where Yamanaka Inoichi also bought roses.
• Meikyō and Inoichi left for Dan and Tsunade’s wedding, joined along the way by the other two members of their generation’s Ino-Shika-Cho.

Tsunade and Dan Katō celebrated their wedding at the Senju Clan's old estate, surrounded by friends, comrades, and family. After the ceremony and banquet, they were formally husband and wife.

• Meikyō gave Tsunade and Dan Katō wisteria flowers, and Dan explained that they symbolized a love bound through life and death.
• A messenger hawk delivered Jiraiya's message and longevity token, which Minato had brought because Jiraiya was away in the Land of Rain.
• Meikyō greeted Minato, Kushina, Fugaku, and Mikoto, while Inuzuka Ryo and Aburame Nami joked about being among the least senior guests.
• Shirakumo Tokinobu organized the wedding party, and Hiruzen Sarutobi watched the younger guests before serving as witness and chief officiant.
• Dan Katō and Tsunade exchanged sacred sake and wedding rings, made their vows, and joined the guests in offerings before the banquet began.

Meikyō visited Uchiha Fugaku, who explained that he planned to compete for the next Hokage position and asked about the village’s political situation. Meikyō warned that Fugaku’s prospects were weak and that the Third Hokage would influence the succession.

• Uchiha Fugaku hosted Meikyō and asked what he thought of the village’s political situation.
• Uchiha Fugaku revealed that he intended to compete with Orochimaru and Dan Katō for the next Hokage position.
• Meikyō asked Fugaku to compare the Uchiha and Senju clans, then pointed out that the Senju’s prestige and Tsunade’s influence offset the Uchiha’s advantages.
• Meikyō argued that Dan Katō had broad support and Orochimaru was favored, leaving Fugaku fourth at best among the Hokage candidates.
• Meikyō explained that previous Hokage had shaped each succession and said the Third Hokage would inevitably support one candidate.

Uchiha Fugaku gave Meikyō the Totsuka Blade and hoped he would help raise the Uchiha Clan to a new pinnacle. After returning to the Demon Slayer World, Meikyō saw the Tokito brothers and Tanjiro training, ending as Shinazugawa Sanemi disarmed Yuichiro.

• Uchiha Fugaku set aside talk of the Fourth Hokage election and presented Meikyō with the Totsuka Blade, explaining its sealing power and asking him to help the Uchiha Clan.
• Meikyō accepted the sword and resolved to use his Reincarnator's Wristwatch to change the clan's future.
• After the new year in Konoha, Meikyō returned to the Demon Slayer World and watched Shinazugawa Sanemi train Tokito Yuichiro at the Butterfly Mansion.
• Yuichiro and Muichiro had passed Mount Fujikasane's trial and learned Mist Breathing, while Tanjiro studied Flame Breathing under Rengoku Kyojuro.
• Shinazugawa Sanemi knocked Yuichiro's Nichirin Blade from his hand during their sparring match.

Meikyō returned to the Butterfly Mansion and challenged Rengoku Kyōjurō to a spar so he could see the strength of Sun Breathing. Their fight began outside the mansion, with both fighters realizing their opponent was strong.

• Rengoku Kyōjurō took over Ichiro's training and tried to teach him Sun Breathing, but Ichiro could not learn it.
• Meikyō returned to the Butterfly Mansion, where Tanjiro and the others welcomed him.
• Kyōjurō mentioned that his family shared Tanjiro's red hair and eyes, prompting Shinazugawa Sanemi to explain the legend of Children of Blazing Crimson.
• Meikyō accepted Kyōjurō's invitation to spar, and Shinazugawa Sanemi refereed while Tanjiro and Ichiro watched.
• Meikyō and Kyōjurō began their duel with Sun Breathing: First Form: Circular Dance Flash and Flame Breathing: First Form: Unknowing Fire, and both recognized the other's strength.

Uchiha Meikyō fought Rengoku Kyojuro and, under the pressure of Meikyō’s attacks, Kyojuro entered the Transparent World. After the battle, Kyojuro demonstrated that he could perceive others’ movements even with his eyes closed, while Meikyō studied the Sun Breathing he had copied.

• Rengoku Kyojuro attacked Meikyō with Sun Breathing, but Meikyō used his Sharingan and Flame Breathing to block and counter him.
• Shinazugawa Sanemi watched the fight and recognized that both Meikyō and Kyojuro had surpassed his strength.
• As Meikyō kept up the pressure, Rengoku Kyojuro began fighting instinctively and predicting his opponent’s movements.
• Tanjiro and Sanemi noticed Kyojuro’s changed state, and Meikyō copied his breathing rhythm and the flow of Natural Energy in his body.
• After the battle, Tanjiro asked Kyojuro if he had entered the Transparent World, and Kyojuro demonstrated that he could see and anticipate movements with his eyes closed.

Meikyō discovered he could use Sage Chakra to perform Sun Breathing and grew stronger after learning its first form. When a Kasugai Crow reported suspected Twelve Kizuki activity near Mount Kumotori, Meikyō set out while Rengoku Kyojuro stayed behind to guide the other Hashira in learning the Transparent World.

• Shinazugawa Sanemi asked Rengoku Kyojuro about the Transparent World, and Kyojuro explained how different abilities might help the Hashira learn it.
• Meikyō failed to use Sun Breathing with Natural Energy, then used Sage Chakra to perform Sun Breathing: First Form: Dance.
• Meikyō told Kyojuro he had defeated forty-nine demons and expected to become a Hashira after his mission.
• Matsuchiro reported that Corps members had disappeared near Mount Kumotori, with suspected Twelve Kizuki involvement.
• Meikyō dismissed Kyojuro's warning about the Twelve Kizuki, asked him to train the other Hashira, and set off toward Mount Kumotori.

Meikyō investigated the disappearances around Mount Kumotori and suspected Upper Rank Three Akaza was responsible. He drew Akaza into a duel in a bamboo grove and wounded him with Sun Breathing, revealing that the attack slowed Akaza's regeneration.

• Meikyō learned that several Demon Slayer Corps swordsmen, including Kishira Hirakawa Jiichiro, had died or disappeared near Mount Kumotori, and he reviewed records of missing people.
• Meikyō noticed that all the missing people were adult men and suspected Akaza, who never harmed women.
• Meikyō practiced swordsmanship in a bamboo grove near Chichibu Town to make his fighting spirit noticeable and lure Akaza to him.
• Akaza appeared in the grove and challenged Meikyō after praising his powerful fighting spirit.
• Meikyō identified himself as Uchiha Meikyō and used Sun Breathing: Second Form: Azure Sky to cut off Akaza's arm.
• Akaza retreated after noticing that Meikyō's Breathing Technique had greatly slowed his regeneration.

Uchiha Meikyō overwhelmed Akaza with Sun Breathing, Sharingan illusions, and fire techniques, but Akaza’s near-death struggle awakened his Transparent World. Meikyō revealed that he had awakened it too and remained confident he could kill Akaza.

• Meikyō pressed Akaza with Sun Breathing attacks, while Akaza regenerated and urged him to become a demon.
• Meikyō used Fire Style and a Shadow Clone with wire-bound shuriken to keep Akaza on the defensive.
• Meikyō repeatedly wounded Akaza, who became increasingly excited as he felt close to reaching the supreme realm.
• Meikyō nearly decapitated Akaza, but Akaza deflected the blade and briefly tried to strike Meikyō’s heart before an illusion made him hesitate.
• Akaza awakened the Transparent World and declared that he would eat Meikyō, kill Doma, and become Upper Rank Two.
• Meikyō revealed that he had also awakened the Transparent World and remained confident he could kill Akaza.

Uchiha Meikyō activated the Transparent World and decapitated Akaza, who continued fighting after breaking through the limit of his neck. Meikyō trapped him with Sealing Techniques and heated his Nichirin Blade with Sage Chakra, preparing to finish him.

• Uchiha Meikyō reached the third stage of the Spirit Activation Technique and activated the Transparent World.
• Uchiha Meikyō and his Shadow Clone overwhelmed Akaza with coordinated attacks, and Meikyō cut off Akaza’s head.
• Akaza’s headless body continued fighting, while Muzan Kibutsuji sensed Akaza’s beheading and wondered whether he had overcome the weakness of his neck.
• Uchiha Meikyō restrained Akaza with the Single Thread Light Array and the Three-Way Seal as Akaza regenerated.
• Uchiha Meikyō used Fire Style with Sage Chakra to heat his Nichirin Blade, intensifying its solar energy to kill Akaza.

Uchiha Meikyō defeated and destroyed Akaza, while Muzan mistook Meikyō’s genjutsu for the return of Tsugikuni Yoriichi and fled to the Infinite Castle. Meikyō healed his injury, considered ways to grow stronger against Muzan, and the news of Akaza’s death reached Ubuyashiki Kagaya.

• Uchiha Meikyō used Genjutsu: Sharingan on Akaza, making Muzan see Tsugikuni Yoriichi attacking him and panic.
• Muzan withdrew his consciousness from Akaza, ordered Nakime to take him to the Infinite Castle, and later summoned Kokushibo to question him about Tsugikuni Yoriichi.
• Uchiha Meikyō struck Akaza with the thirteenth form of Sun Breathing ten times, destroying him, then collected his blood for research.
• Uchiha Meikyō healed his shoulder and planned to seek guidance from Tsunade and Minato Namikaze to improve his Mirror Body Flicker Technique.
• Uchiha Meikyō headed back to the Butterfly Mansion to report Akaza’s death and planned to have more Nichirin Blades forged.
• Ubuyashiki Kagaya received the news that Upper Rank Three had been slain and rejoiced despite his worsening illness.