This game is not abandoned. And ntr is not abandoned in this game. I think it depends on route you go. Fake vs real friendship.
Game no, but NTR yeah. Dev can talk all he wants about future antagonists, but he hard bailed on NTR with Eric after building the plotline for the entire development thus far and most of those on his Discord or who talk to him are pretty heavily biased against NTR.
I highly, highly, doubt we'll see anything approaching NTR from this game. Too many antis who wig out over the smallest hint of it. More I am guessing we'll get some generic pretty boy or similar such character to safely compete with while never in any real danger of losing the girl too while the story devolves into a meaningless harem plot.
Just my take though. Happy to be wrong on this, but I have zero interest in another dime-a-dozen harem story with no main plot or conflict outside of gotta bang 'em all.
Not to say you have to have NTR to be interesting, but it was something. Without it, all I see here is an uninteresting character being given porn-parody level storyboards to take him from one sex scene to the next. Then again, I've never liked the Max character even slightly, so could just be bias.