I'll be honest with you; your game isn't exactly my cup-a-tea. Most of the characters are either absurdly cruel or terribly incompetent. They are so over-the-top, but I know some people enjoy this kind of content. Actually, I usually write stories that are just as weird/extreme as this one. Anyway, it's obvious that you put a lot of effort into this demo, so I'll give you some feedback. I'll also try to be as objective as possible.
>The college
Why is this fancy College so dirty? There's food on the restaurant floor and papers on the college floor. The bathroom looks kind of dirty, too.
>The bathroom
That's some weird looking bathroom. I thought it was a unisex bathroom at first, but then I saw the signs on each door. It looks more like a crappy gas-station bathroom than a college one. However, I don't know if this is intentional.
>Sound effects
Most of them are fine, but I personally think that the one you used when Natalie forces Josh to lick her shoes could be better. For example, you could use something like this:
https://www.youtube.com/watch?v=8jJ-T8HZF7c
https://www.youtube.com/watch?v=aErEGS5Pl5Q
>Gwen says "<3"
Maybe it's just me, but I find this pretty weird. I get it, she's saying something with a sexy tone of voice, but I still think it's kind of weird. At least pick a font with a good looking "3".
>There are no CG images
I'm talking about this:
https://aminoapps.com/c/anime/page/blog/visual-novel-what-are-cgs/vqtn_un8ZMREB2YJrjvKpD1l116lXg
However, this is just a demo, so I guess you'll add some CG images here and there in the future.
>There are some bugs
There are some places where I can walk on walls and doors (for example, the men's dorm). But once again, it's just a demo so that doesn't worry me too much.
I must say, I really like the fact that there are so many different dialogue choices and branching story paths. That encourages a lot of replayability. On the other hand… well, I really hate the teacher, Gwen, Nicole and all their shitty friends. Seriously, these people are fucking monsters. I lost count of how many times I wanted to kill them. In fact, I can't remember the last time I felt so frustrated, angry and even depressed. But once again, these kinds of stories aren’t for me and I know there are a lot of people who are into them. Besides, maybe I picked all the wrong choices and got the worst ending possible. Perhaps I should try to play the game again and see if I can get something better.
I hope that I've been able to be of some help and I wish you luck with your project. As I said before, I can see you put a lot of effort into this game.
P.S. I'm not an English native speaker so sorry for any mistake in my post.