I enjoy the manga considerably, that's why I know its coming out. It manages to draw a great line between "ecchi funny moments" and "legit good battles" and has the two interact in an interesting way.

It will just draw a lot of controversy because of the use of the word "slave" regardless of how it works in universe (I suspect highly it'll be replaced for something else), and the extremity of how many girls are forced against their will to sexually service him over the course of the story because of said power. There is just enough "I don't want to do this!" whine from girls that it'll make people scream rape about it, even if most of them secretly enjoy it.