The epic showdown is here. Watch the official trailer for Demon Slayer: Kimetsu no Yaiba – Infinity Castle, as Tanjiro, Nezuko, and the Hashira face their deadliest challenge yet. After Muzan Kibutsuji launches a surprise attack, the Demon Slayer Corps is thrust into the eerie, ever-shifting Infinity Castle for a final war against darkness. The fate of humanity hangs in the balance. Only in movie theatres September 12.