Who Defeats Muzan in Demon Slayer
In the final arc of Demon Slayer: Kimetsu no Yaiba, Muzan Kibutsuji is defeated by Tanjiro Kamado, supported by the combined efforts of the Demon Slayer Corps.
How Tanjiro and His Allies Overcome Muzan
Tanjiro lands the final strike using Hinokami Kagura, while his allies hold Muzan in place and weaken him over the course of the battle.
Why Muzan Cannot Regenerate or Escape
Muzan is stripped of his regenerative abilities and the blue Spider Lily medicine, which removes his immortality and leaves him vulnerable to destruction.
For more details on the ending and character arcs, see the Demon Slayer manga and anime series on official platforms such as Shueisha.
