This has been decent. The mc can be a bit comically evil sometimes and its strange that the people around him aren't more wary or reluctant after all his behavior. I think the mc is an interesting and unique as a character, but every other character is very cookie-cutter. Personally I wish the evil of the people that he kills was emphasized more. Its not that they aren't evil enough, but their evils are just glossed over narratively and it feels like a contrived way of somewhat justifying the mc. There are a few things that could have made his character much better in my eyes; glimpses of his time in the hells, some allusion to his deeper motivations, and a slightly stronger identity as the demon lord.