Nezuko Demon Slayer: Rebirth of Tsukuni

Traveling through the world of demon slayers, he single-handedly trained the country's successor, who had abandoned martial arts for a hundred years, into a real samurai, Hou Yi. The master of the country regained the demon slayer blade, and together with the Utanyashiki family, he founded the demon slayer team. After meeting Nezuko who brought Tanjiro who became a ghost, Muzan's life begins to countdown!