While developers of this game are pretty shady people with pretty shady ways of doing things (locking your horrible traced art behind a "phone memory" that you have to buy with real money? seriously?), but this game isn't nearly as bad as people tend to think.

Difficulty is fine. Yes, you can't complete the game by just dating girls but if you talk to them between dates you'll have enough nectar to upgrade yourself and go well above the difficulty spike. And after you have sex once you can always do that as many times as you want - sex dates are way easier than usual ones AND they do not count as dates (i.e. difficulty does not increase).

I used 100 nutaku gold that I got for free to get a girl from starter pack, open a porn studio and get two girls from that as well, so now I have 7 characters opened and I completed 5 of the routes already without any problem.

That said, it's rather stupid how I only play a porn game for it's gameplay. Characters suck and art usually sucks as well, although that doesn't matter because I can't even see most of it. "Upgrading" girls will be either an impossible grind or a money waste and I both ideas are not for me so I'll probably stop playing after finishing all the routes I can freely open... Still, while all the other problems told here are correct, difficulty-wise it's fine. Easier than HoneyPop as far as I remember - that one I was only able to play on "easy".