A young man who had longed for stories of good and evil since childhood lost his life in a tragic accident and was reincarnated as a boy named Chrono Mak in another world.
He learned that in this other world, there is magic and witchcraft, and depending on how you train them, you can become as strong as you want to be, so he decided to become the strongest demon king in order to recreate the story of justice and evil he once dreamed of.



Edit: I've read the first chapter. It is exactly like eminence in the shadows, with the MC training for an imaginary ideal, then reincarnated into a magic world and immediately figuring things out.
MC is much more moderate than Cid, and although he tries to live to be a demon king, he isn't really the right material, he only kills evil and people barely know of him, he's trying to make a hero but has no success, and people like him too much for his plans already as of ch50