More specifically;
Realistic 3D art, with adult male protagonist and younger woman (or multiple women) in the hebe/teen age range (11-17).
I'd love to see a romantic relationship that some plausibility/realism in the story line.
Take a look at
Friends In Need and
Whoremonger (don't let the name dissuade you.) Both have a future character that is related (sister and daughter, respectively) that are due to arrive shortly, but they appear to be fan service to get the incest tag and will most likely be avoidable. Both games are age-adjustable, but a blanket -2 to -4 or a little more to default ages works well and looks realistic, as the "18" y-o's are in high school.
Edit: I also prefer Daz, there're only a few HS games I'll play. I wanted to endorse a couple suggestions from the following post,
Little Green Hill and
A Day At The Spa.
Sparkling Duplicity too (VAM not HS), but I disagree about
Rational Chaos if you're trying to avoid incest.
Little Green Hill has a mother and sister as LIs but I believe they're avoidable.
Hmm, maybe
Ripples too? Sadly, there are so few hebe centric games that expanding outside of Daz is a necessary evil once you run out of content, which won't take long. (Again, some related but avoidable characters. Incest is
really difficult to avoid in harem games.) Weird thing about
Ripples is that it is a time travel game,
so present-day milfs have high school age daughters, but those milfs are high school girls themselves when the MC accidentally almost imitates Back To The Future .