Muzan's assaults intensify as the sun is about to rise. The Demon Slayers and the last surviving Hashira fight with all their might. Unfortunately, their blades seem incapable of reaching their sworn enemy... The poison of the original demon is now gnawing at Tanjiro, who is on the ground, inert. Will he be able to get up and continue the fight? Ready to sacrifice everything, will the Demon Slayers be able to hold out long enough to win?