Arc 11The Final Reckoning
Sasuke defeated Kokushibo, seized control of the Infinity Castle, and brought Muzan into a final battle with the Demon Slayer Corps. As dawn approached, Tanjiro and the Hashira weakened Muzan, but Sasuke collapsed after stopping his escape, leaving Giyu, Sanemi, and Gyomei to defend him from the reawakening behemoth.
- Zenitsu beheaded Kaigaku with his self-created Seventh Form, while Kyojuro protected him from Kaigaku’s attacks.
- Sasuke took control of Nakime and the Infinity Castle, then fought Kokushibo as Gyomei and Sanemi carried the wounded Muichiro toward Muzan.
- Sasuke destroyed Kokushibo with a blade combining Chidori, Amaterasu, and Kagutsuchi, and Kokushibo died remembering his jealousy of Yoriichi.
- Sasuke used Kotoamatsukami to command Nakime to gather the Corps and Muzan, then brought them together in a sealed arena for the final battle.
- Muzan transformed into a monstrous behemoth, but Sasuke shielded the Corps with Susanoo while the Hashira attacked and Tanjiro struck Muzan’s hearts and brains with the Thirteenth Form of Sun Breathing.
- Muzan killed Nakime and the Infinity Castle began collapsing, but her lingering instincts carried Sasuke, the Corps, and Muzan up to the surface.
- Tamayo’s medicines stopped Muzan from splitting and weakened his regeneration, so Sasuke ordered the Corps to attack as dawn neared.
- Sasuke stopped Muzan from burrowing underground with Samsara: Shackling and Shinra Tensei, then collapsed, and Giyu caught him, and Sanemi and Gyomei joined Giyu to face the reawakening behemoth.