Let's be honest. This game has been functionally the same for at least 3 years now. It hasn't changed one bit in concept or execution. It's been bogged down by "technical improvements" and the very occasional reskin that passes as a new girl.
The storyline has "progressed" only as a formality, because progressing the storyline seems completely arbitrary and random with no distinct cues. Technically, some new girls have been added, but your interaction with every girl is functionally identical. The gameplay loop is still a terrible and uninteresting grindfest of trying to work up six distinct stats. Plus, it's a "harem" game where you can't even get more than 2 girls on the screen at the same time, and even that is a major pain in the ass.
The renders are basically simple cartoon drawings on generic doll poses. There's no interactivity to the scenes themselves, with basically every action looking the same regardless of who it's with. You have a daily schedule of "classes" that you're supposed to care about, but it's hard to because nothing of note happens in them.
By now it's blatantly obvious that the developer has no real intent of finishing the game. Progress towards any kind of conclusion has all but stalled, and he's now fixated on "backend improvements" (with no corresponding benefit to the horrible gameplay loop or clunky UI) and the occasional adding of a new girl (basically just a reskin of the generic doll models they have already).
If you really like X-Men and enjoy the idea of meaningless, mediocre renderings of virtual sex ad nauseam, go for it. Otherwise, don't bother.