The female characters will mostly be what I call "simple beauty", something like the women we can see in the street at any given day. Nothing "cartoonish" or exagerated, but still have something that catches your eye, except for a few side characters, for plot purposes.
How the game will play out... it will be a series of events one can expect while starting adult life. First job, first real relationships, first money earned, first stuff bought with your first money earned... I really don't want to do a big Spoiler on this... do you really think it's interesting to read the movie script before watching the movie???
I want to make it sandbox, but I'm almost sure that my coding skills won't be enough for that, at least for a first game...who knows...maybe I have some kind of breakthrough in my learning...
About the MC, he's assertive and surely perverted. If you make the wrong choices, the game will be really short for you., which means you can control he's nature, but you'll miss out on most of the content. Not a romantic game, definitely.
Hope I've answered all your questions...