To anyone maybe a tiny bit upset about the direction some of the girls go depending on how you treat them, I compare the game's overall direction to the Venus Blood games. In that game, there's a pretty obvious "let's break the girl" direction, though it usually lets you change it in different ways. Simply going a slightly more good route just has the girl somewhat falling in love with you, and the ending is a tad nicer because of it, though you still do some pretty dirty things to her despite this. The other side is corruption, which the series bathes in. It usually breaks the girl to the point she becomes a giant slut, and most of the series revolves around shattering a girl until she's some rape happy slave that might even go after other girls. The direction I see this game going is, you either play a little nice with them, but not really lightening what you're actually doing to them because lawl slavery, or break them so badly they're more your property than living things. I am not bothered by this, but that's the route I see this game going. Don't know if Arc plays Venus Blood, but the choices for the girls seem to go heavily in that direction.
TL;DR Venus Blood is about corruption, and this game seems to have similar route paths to good slave, and dirty whore.