Interesting to see that many people have a similar reaction to mine. I'm all in for Chloe and had actually restarted the game, refusing everyone except for her - and now she's totally absent from the story and clearly intended as a secondary LI, not a main girl. But no one else interests me anymore... I do have to recommend the game for allowing the MC to not engage with the other LIs to a high degree - though (unavoidably, I guess) now everyone is very lovey-dovey/hot & horny with MC who doesn't flirt and doesn't do any naughty stuff with anyone, so their thirstiness for him isn't really earned.
Apart from that, the whole prostitution angle does indeed rub the wrong way: MC started off as a likeable innocent caught up in his father's dark past, but now he's becoming a sleaze and recruiting students to become whores is just not okay in a game like this which never indicates the MC is mandatorily going to be active in some unsavory business just to get a luxurious roof over his head. It feels like this second part of the game doesn't match with the first one any longer. Too bad, I really enjoyed this game in the past. I hope this gets back on track.