At version 0.3.2, I'd like to give this 2 and a half stars, not quite 3.
For the most part the renders are fine, some bad backgrounds and lighting at times, but it doesn't really matter. Compared to many other 3D CG VNs, it's not bad.
Writing-wise, the romance is better than the average, but not that good. It isn't nonsensical like its competition, some good scenes, but it wouldn't pull anyone in without ero. I was surprised there'd be other girls to romance, actually, I really thought it'd be only the girlfriend. There is some drama around that, but it's really lacking. I think drama between characters when you split your love like that could be a lot of fun, but it doesn't go deep or interesting, just a couple mediocre ones. And after a while, you just get a blatant, binary choice which girl you like and the other is set to 0 immediately, no matter what. No avoiding. Really? That just cheapens things a lot if you ask me. I suppose Riley thought it was too many variables to juggle and wanted to keep the routes separated more.
NTR-wise, really lacking. You can go for it super early and your girlfriend loses her virginity in her sleep, no fanfare, she doesn't remember it. That's just boring and uninteresting. So if you prevent that you'll either end up taking her virginity yourself later or you can try to let the NTR happen another way and her virginity won't really be mentioned or have any fanfare. From the scenes I saw, it never really had the tension or rush of NTR happening for the first time one way or another. And if you REALLY delay things, there's no NTR scene available that will feel like the first time she has had sex with another person. Nor the first time you've seen it. And if you kept her a virgin that long, it definitely isn't seen by the scene, it might not even remove her virginity from the stats screen that late in the story.
The more time you let it build up, the less payoff. But then early you have such lackluster options.
The main plot is just a vehicle, nothing to say good or bad about it.