I might aswell say my impressions so far, ive finished heroine 3 since I was allready reading it before I had joined, so to minimize spoiling ill tell you which heroine route i'm gonna talk about before the spoiler warnings. The scene selection tells you after you've played through a heroine which heroine number it is.
Ive enjoyed the VN so far, nice CG, enjoyable voices as mentioned and I really like the BGM, aspecially the funky one.
I like the characters but there are some that's too energetic for me.
Edit: Oh yeah, I forgot to mention this, minor spoiler for those who hasn't done one route yet: