Are we really going to pretend the main draw of the game isn't the grandma? If that wasn't the case why does the original post on the front page have "no sex with grandma yet" in bold. It's obvious what people want and it's kind of ridiculous to pretend that it's assumption on these peoples part. That said I don't care for the grandma, I don't care for most of the game. I always find it kind of cringe when the MC and his harem devolves into "haaa haaa your cock is so great haaa haaaa you're the most amazing person ever haaa haaaa."
Nana wasn't the main draw for me
at all, as a matter of fact, when I first saw this game on here, I remember looking at the title and being like, "Grandma's House... hmm not so sure about this one". Then I ended up out of curiosity checked the thread, and when I saw the tags, the synopsis, and some of the other characters in the previews, I was convinced to try it out, and I haven't looked back. Don't get me wrong, I really like Nana, but if she was the primary focus of this game, or rather, the only real love interest, then I would not be typing this right now, and I would never had never given this game the time of day.
Liz is my favorite character no question, with Cat being a pretty close second. Whenever they're on screen I'm always happy, especially when it's at the same time. And no matter how many sex scenes I see of them, or just scenes in general, I never get bored or tired of seeing them. It a joyous occasion for me every time, and when Nana and Amy finally get their big scenes, it will be a joyous occasion as well, and after that's said and done, I will look forward to many more scenes with them.
As for you finding the game cringe, the game doesn't take itself too seriously, and things are purposely exaggerated and it's full of idiosyncrasies. It's pretty much a parody of the harem genre itself, but while managing to have it's own unique flare. It is purposely over the top at many junctures throughout, while maintaining a wholesome and lighthearted atmosphere when it needs to.