Demon Slayer: The Undying Thunder Breathing Swordsman

(Two completed novels with 9.4 ratings, quality guaranteed!) Tenma Feiyu unexpectedly reincarnates into the world of Demon Slayer. Raised by a former Hashira, he vows to change the tragic fate of the Pillar Slayers. From then on... a pair of "master-and-disciple" rivals appear on Mount Peach. The Demon Slayer Corps gains a shamelessly bold strongest Hashira. Shinobu Kocho finds someone to hold dear. Muzan Kibutsuji gains a new nightmare—another psychological shadow after Yoriichi. When the demons are vanquished, the night is no longer terrifying!