Kimetsu no Yaiba Movie: Mugen Ressha-hen

Tanjirou Kamado and his friends from the Demon Slayer Corps accompany Kyoujurou Rengoku, the Flame Hashira, to investigate a mysterious series of disappearances occurring inside a train. Little do they know that Enmu, one of the Twelve Kizuki, is also on board and has prepared a trap for them.