Overlord: The Demon King

a young man is reincarnated with the body and powers of muzan kibitsuji in overlord, with some modifications. Overlord AU from over 200 years before Canon. some modifications in the powers of the oni to adapt to the new world. I'm not native English, I'm using a translator in my native language. last but not least all rights to Demon Slayer and Overlord belong to their respective creators I only own my OCs.