Someone's been living under a rock when it comes to Illusion games
Or maybe I didn't found the other afterwards interesting enough to actually play it. I've played almost all of them fyi and so far the best one are indeed AG3 and AA/AA2 and that's it. That is if you're looking for a good japanese school simulator, otherwise Honey Select is the alternative for sandbox sex scenes and studio stuff given the more realistic approach.
Koikatsu it's not even half of the abovementioned game. When it came out I truly hoped it was another AA. Sure, the graphic would've been more anime-ish than what was before, but I wouldn't have cared that much. Instead it was a pure waste of time. This one instead, seems so far more interesting than the previous.
Before assuming things, think twice. Appreciated.