Aoi and Minazuki at least have the minimum of communication, which is why their relationship is light-years ahead of the other couple. I agree with you about the other two though! NO communication!I understand this might be the entire point, and maybe I'm just too autistic, but it is getting a bit too frustrating how all issues faced by people in this series could be solved by just communicating even a tiny bit. Like these people don't say ANYTHING to each other. Not even non-verbal communication.