The story is really interesting, I can't wait to see more! Really rather early for me to comment as I haven't made it very far in the game yet but, between that and the screenshots it's easy to tell that the game is better than you'd probably expect it to be.
I really like how fresh this game feels. Not that it really matters how you usually see the same school and house in other VN's but I like how it's different and how much better they look in this one. Also am really liking how different the character models are even though it's Koikatsu, usually they look a little plastic-y and almost doll like. I mean, they still do but they also look softer and much more high-quality than usual. That coupled with the lighting makes them look even better than they already are!