Ehhhh.
Pros:
+Good renders.
+Seems like it'll cater to a wide set of kinks.
Cons:
-(Subjective) Characters aren't really to my tastes, the sister is hot but outside of walking into her in the bathroom seems there's little content there ... and one of them that you meet after it goes all sandboxy is the stuff of nightmares.
-Dialogue is pretty unnatural ... I don't mean in the sense that all porn games do of people just getting at it inexplicably ... I mean just regular dialogue being understandable but really off... "I'm really fucking cooler than you", "Well we are richer than you. And we are only 18. and last time I checked you were 25, old hag", "Your sister is my girlfriend so she's added to my rich factor", seems mainly to be the sister I think...
-Sandbox mode is bad.
I'll elaborate on that last one a bit.
So while it does have the handy thing at the bottom of a circle for different rooms to quickly navigate to them - it doesn't include all the rooms off of those room... and because it's missing the essential element of character icons on each room you've then gotta click around to check each place to find people.
Also it has a time-limit to complete something, which is a mechanic I just loathe. (Even worse here as you can't complete the quest to do the thing yet so you'll just always fail).
You have relationship points with characters, says 10/100 you'll interact with them and it'll say that it's getting greater, but it's not - if something is capped it should say so.
There's also desire stuff, which seems to go down if you've not interacted with someone recently.
At some point I had dialogue which where I had to say I didn't have a swimsuit - bought one ... still only option is to say I don't have one ... there's an option to buy it again but with no way to actually earn money you can't.
So yeah ... it has potential but even with the small amount of stuff in it it needs some reworking.