The narrator is awesome, the technical production is also great, but the story itself is entirely lacking and reads like bad anime fan fiction.
Author is a good technical writer and good at writing action scenes. He had what could have been an interesting character (and universe), but the main character turns out to be a hardcore Mary Sue with a super hero harem of adoring women, and of course an entire organization of people with no problem with idea of being turned into his magically controlled slaves. Character motivation, for either the protagonists/antagonists, is completely absent.
It’s got a lot of problems… if you’re the type of person that likes watching harem-type anime where the only purpose is to watch the hero play house with his adoring women, this story is for you, if not, then I definitely would not recommend.