Demon slayer : Reincarnated as Kokushibo

Death was only the beginning. Reborn as Kokushibo, the strongest of the Upper Moons, a former otaku finds himself trapped in the body of a demon destined for ruin. Armed with foreknowledge of the future and a deep understanding of the world’s secrets, he seeks to rewrite fate, avoid inevitable destruction, and perhaps… surpass even the legend he now inhabits. Yet the deeper he walks Kokushibo’s path, the more blurred the line becomes between who he once was… and what he is becoming. — Description from novelcodex.orgFull novel: Demon slayer : Reincarnated as Kokushibo — read the rest free on N​o⁠v​e⁠l​C⁠o​d⁠e​x⁠.​o⁠r​g⁠