Demon-Slaying System Starting from Demon Slayer

Reincarnated in the Demon Destroyer World, he was met by Kintaki Konsaji and returned home. 15 Years later, he received a novice gift package from the system: Nichirin Sword Vibrating Gold, Magatama Sharingan, and Hatake Sword Techniques. From now on, start to do tasks, make choices, marry Butterfly Ninja, and reach the pinnacle of life. At this time, Onimu Tsuji Mumei was being pinned down on the table by Kintaki Shiizen, drinking wisteria tea. PS: Single heroine, Butterfly Ninja, no harem, anyone looking for a harem is in error! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.