It's not a bad game but it falls into a few many porn game tropes, the classical shower scene, the classical douchebag friend (sometimes it's a rival, same sort of character archetype either way), the naive doting girl who's essentially a complete Mary Sue, the MC himself is also a bit of a Mary Sue (extremely attractive, wealthy, polite, respectful, highly socially competent despite apparently being anti social, in great physical and psychological health, his only real character flaw is his choice in friends) . I don't know, like I said it's not a BAD game, there's just some parts of the plot and dialogue that fall a little flat. I especially cringed when you see the flashback to the friend saying they should "run a train on this slut" in the dorm, why is he even friends with that guy? What do they have in common?
Another point of contention I have is that how is the MC single all this time apparently? You do realize a guy as attractive and successful as him doesn't need to go after women right? He'll be getting hit on himself, why has he apparently not had any serious relationships? He seems the romantic type so far and based on the games archetype, and yet somehow he's remained single into his fucking like late 30's early 40's as a wealthy extremely handsome bachelor with a clean apartment and good speaking skills? Yea, I don't really buy it, there needs to be an explanation for that because the "antisocial" card doesn't work when he doesn't act anti social. Like life just happens, I'm less attractive than him, far less wealthy than him and I get hit on occasionally, I can only imagine the attention he would get.
I also sort of wish personally that we could aim for the mother instead of her daughter, but that's a personal preference rather than a real criticism. Overall the game is good, there isn't much in the way of romantic porn games and this ones a solid enough entry, I think you should try and endeavor to avoid falling into porn tropes though too often if you do intend the character development to be taken seriously.
Oh, and there's a typo early on saying "Layed" instead of "laid".