Rᴇʙɪʀᴛʜ ɪɴ ᴛʜᴇ Dᴇᴍᴏɴ Sʟᴀʏᴇʀ Wᴏʀʟᴅ

Tengoku Kenjin gains an incredible multiverse system and enters the world of the blade. Receiving a task from the system, he travels to different worlds, starting with all the familiar worlds of Demon Slayer, Naruto, One Piece, BHA, Clover, etc., as well as many other worlds.