Positive points are the beautiful girls and the smooth animation. This is a game where I can understand why the dev would choose Unity.
Sadly, that again is the problem. The menu and the save options, like so often with unity games here are very limited.
I know it can be done well, and considering this is a demo, it might soon be better.
Another issue is size, this short demo has more than 1.8 gigs, which seems like overkill.
The writing isn't bad, but there are several mistakes that make it pretty clear this is not someone whose first language is English.
All in all, definitely a good start.