After a night of fierce combat against the avatars of the upper moon Hantangu, the men are galvanized by the imminent dawn. Tanjiro, who has located the original body, gathers his ultimate forces to catch him and to terrace him before he manages to take refuge in the shadows. But if the rays of the sun are the allies of the defencemen, they are mortal for Nezuko. Tanjiro hesitates: must he abandon his race-prosecution to protect his sister, or should he sacrifice it to defeat the upper moon? Will Tanjiro manage to decapitate Hantangu?! What will happen to Nezuko?!