Demon Slayer: Infinity Castle delivers jaw-dropping fights but gets bogged down in filler and backstory. From Doma’s stunning showdown with Shinobu to Zenitsu’s long-awaited moment of vengeance and Tanjiro’s battle with Akaza, the animation shines as always. But at nearly three hours, the story drags, weighed down by invented material not found in the manga. The result is a film that thrills in bursts but disappoints overall.