I love it. I haven't seen a game that makes use of only females, but, I won't say that I'm opposed to the idea, either... I would say I'm all for it.
I won't even go into detail about this because 1) it's a demo, there isn't much to discuss and 2) there are no flaws whatsoever.
Voice acting (VA) is on point and art style is beautiful. I think we can all assume that not only the HScenes that are gonna be beautiful, but, every scene will be.
10/10 would recommend to a friend