Final Battle Arc

Standing as the series' eleventh installment and its concluding chapter, this arc spans chapters 140 through 205 of the manga. It is divided into two connected sub arcs, the Infinity Castle Arc and the Sunrise Countdown Arc, which together carry the narrative to its resolution.

The arc represents the culmination of the entire conflict between humanity and demonkind, bringing every major surviving slayer into a single sustained campaign against Muzan Kibutsuji.

Tanjiro and his fellow slayers battle through the night against Muzan, the King of Demons, suffering heavy casualties along the way. Their strategy hinges on time itself, since keeping the demon king contained until daybreak would expose him to the one force he cannot withstand, the rising sun.

Refusing to be cornered, Muzan brings his most terrible abilities to bear, and when brute force falters he attempts to turn the slayers' own bodies and resolve against them from the inside. The struggle stretches across the shifting halls of the Infinity Castle and then into the open as the horizon begins to brighten, with every fate hanging on whether the Corps can endure until morning.

The arc decides the long war once and for all as the contest reaches its breaking point with the coming of dawn. The two halves of the story, the assault within the castle and the race against the sunrise, resolve the central conflict that has driven the series from its opening chapters.

As the final arc, it closes out the saga of Tanjiro and the Demon Slayer Corps, settling the destinies of the surviving characters in the wake of their confrontation with the demon king.