Chapter Summaries

Muzan was overwhelmed by the Hashira and other swordsmen while the aging drug weakened him, and the Demon Slayer Corps’ supporters rallied as news of his imminent defeat spread. Xia Xi reached the battle hall, where the fighters continued attacking Muzan, who was still trying to protect Xiang Kai.

• Muzan realized Xiang Kai had failed to keep the swordsmen away, and nearly thirty Hashira-level fighters surrounded him.
• Enko Onizuka and Sanemi guarded their position, and Enko promised to help Sanemi reunite with his younger brother after the battle.
• Tamayo learned Muzan was in a hopeless position and celebrated the approaching end of her centuries-long vengeance.
• Tetsujin urged the swordsmiths to keep forging and repairing weapons, while Sayo and the command staff sent reports of the battlefield’s progress to Ubuyashiki.
• Ubuyashiki and Amane rejoiced that Muzan’s defeat could end the curse on their family.
• Xia Xi reached the battle hall and saw the Hashira and other fighters beating down Muzan, whose strength and regeneration had declined as he tried to protect Xiang Kai.

Xia Xi killed Xiang Kai and defeated Muzan, then unleashed a sequence of Dawn Breathing forms that shattered Muzan's body. As Muzan faced another attack, he transformed into a giant infant.

• Xia Xi seized Xiang Kai and crushed his head, completing the quest to annihilate the Twelve Kizuki.
• Xia Xi overpowered Muzan, forced him to his knees, and dismissed his pleas for mercy.
• Xia Xi struck Muzan with the first six forms of Dawn Breathing, cutting him apart and breaking his body into scattered pieces.
• Muzan tried to reassemble and escape, but Xia Xi continued attacking him.
• Muzan abandoned his dignity and began transforming into a giant infant.

Xia Xi cut through Muzan’s final demonic infant form and fought him as Muzan accepted that he would die. After Xia Xi severed Muzan’s neck, Muzan urged Matsushita Shousha to give his strongest attack and become a demon.

• The demonic infant crawled toward the outskirts, but Xia Xi struck it with Dawn Breathing’s seventh form and exposed Muzan.
• Muzan reflected on the legacy of the Demon Slayer Corps, then attacked Xia Xi with flesh tentacles, and Xia Xi blocked them with the eighth form.
• Muzan launched a desperate assault, but Xia Xi battered him with the ninth and tenth forms and shattered his remaining armor.
• Xia Xi used the eleventh form to sever Muzan’s neck.
• Muzan praised Matsushita Shousha’s conviction and urged him to attack with everything he had, then become a demon.

Xia Xi fought Muzan as the Demon King poured his blood into him, hoping he would inherit his power and become a stronger Demon King. Xia Xi destroyed Muzan with his new Fourteenth Form, leaving the consequences of the blood inside him unresolved.

• Muzan used his flesh whips to wound Xia Xi and transfer some of his blood, then weakened as Xia Xi severed the whips.
• Xia Xi unleashed his Thirteenth Form, Aoyao · Heaven's Vault Overturned, reducing Muzan to a half-skeleton.
• Muzan revealed he had wanted Xia Xi to inherit his power, surpass him, and become the last Demon King.
• Xia Xi rejected Muzan's wishes and struck him with the Fourteenth Form, Silver Dawn · Primordial Chaos · Primordial Creation of Heaven.

Xia Xi defeated Muzan and unlocked powerful new abilities, including a transformed Demon King’s blood potion that left him human and free of sunlight weakness. With the demons gone and the main quest updating, the Hashira and others celebrated their victory and gathered around him.

• Xia Xi’s ultimate Breathing Style attack destroyed Muzan, and the system awarded him enough proficiency to max out Dawn Breathing and unlock Heaven’s Chosen.
• Xia Xi tested his enhanced power and realized the new abilities had arrived after the last demons were already gone, leaving him with no bosses to fight.
• The system processed Muzan’s blood using the Blue Spider Lily and Xia Xi’s medicine skills, turning it into a trace amount of Perfect · Golden Potion and granting him supernatural traits while keeping him human.
• Xia Xi saw the main story quest update and all system permissions unlock as the Hashira gathered around him after Muzan’s defeat.
• Tengen congratulated Xia Xi, Obanai moved him aside, and Kanae and Persimmon embraced him while Shinobu thanked him for his efforts.

After Muzan’s defeat, Xia Xi was celebrated by the Demon Slayer Corps and reunited with friends, mentors, and fellow fighters. As the survivors began cleaning up, Xia Xi checked his Status Panel and found a new Mail notification.

• Murata and Demon Slayer Corps members across the Far East celebrated the end of the war against the Demons.
• Igarashi, Xia Xi’s fellow disciples, Kazami Kōgi, and other Cultivators thanked Xia Xi for defeating Muzan and avenging the dead.
• Jishō and Tanjuro reflected that Demons would no longer threaten the world, while Tanjuro briefly glimpsed a smiling Swordsman who resembled him.
• Kazetoriin suggested that Igarashi take her in after they retired, and Senjuro reunited with Kyojuro as Shinjuro checked on Little Shemaru.
• Sabito, Giyu, and Makomo invited Murata to meet Urokodaki, and Murata was moved to tears.
• After the celebrations, the survivors began cleaning up, and Xia Xi noticed a new Mail icon on his Status Panel.

Xia Xi discovered that he had transmigrated into the Demon Slayer world and received a new free-mode quest that let him manage factions and territory. After inspecting the strategy-game-like map and plotting ambitions for the Far East, he set the politics aside to care for the women gathered around him and decided he wanted to stay.

• Xia Xi claimed rewards from an anonymous email, raised his Breathing Style beyond its previous maximum, and turned off every cognitive filter.
• Xia Xi realized that the people around him were real and that he had transmigrated, then found a system notice explaining the space-time interference and compensation agreement.
• Xia Xi unlocked free mode, inspected the faction and territory map, and began planning a Xia family shogunate and an eastern expedition against the United States.
• Kanae, Persimmon, and Shinobu crowded around Xia Xi to tend his wounds, and he embraced them and said they should all live happily together.