Little column A, Little column B, but more the latter. All girls are consenting and the harem is MC loving every girl and every girl loving the MC. There's quite a lot of dirty talk and degradation during the sex scene because at least 2 or 3 girls are into it, so expect most of them to be quite "submissive" in the bedroom, or at least accepting to have all their holes used and abused to keep it classy.
So expect a quite a lot of of rather degrading talk (especially as the game progress, not as much as first), but in a consensual way.
The Mind control stuff is fairly limited, it probably happens only a couple time in the whole game and it's not enslavement stuff.
Great game, though, one of the few devs that deserve 100% of their patreon money: Update are consistent and he clearly doesn't try to milk anyone.