During the mission with Uzui in the Entertainment District, Tanjiro and his comrades come out victorious in the fierce battle to the death against Upper Six Demons, Daki and Gyutaro. The death of the Upper Rank Demons that Tanjiro and his comrades succeeded in results in a shift in a situation that has remained unchanged for a hundred years, and brings about a disturbance between Muzan Kibutsuji and the demons…