The gameplay is exceptionally poor, however instead of taking the feedback in earnest, the developer seems more interested in convincing people that the reason they aren't having fun is because of their lack of skills, going so far as to post janky gameplay proving that it's in fact not a problem with the game because it's not unbeatable. Their responses to the feedback are also very defensive and dismissive.
Maybe the hentai art is great. But the game is bad, and since the developer is making it abundantly clearly that they're not ready to entertain that possibility, I don't see this ever improving.