I wanted to read this as I loved the anime, I love Key works in general and heard from fans that this was better. But it looks like it's probably just that the peaks are better because the rest is very boring and not engaging. You can tell it's the start of Key as it has elements of what they become, but it doesn't hold up today.
Kano route: 5/10
Minagi route: 5.5/10
Dropped during Misuzu