I've only played this demo for a little while (doing Mr. Parker's route), but here are a few of my thoughts so far:
I absolutely love the side character known as Liz. She's made me laugh both times that I've met her now with things she's said/done. Can't wait to see the other side characters.
The interactions between the MC and the love interests, as well as the love interests interactions with each other, are wonderful, so I'm excited to replay the game to see the other sides I haven't gone through yet.
I also love that some of the choices you make are updated onto the MC's profile (it's a nice little detail that I enjoy).
So far a great demo, and can't wait to play/read the full game when it's completed :D