I skipped most of the discussion so excuse me if I say something obvious or already discussed, but this story depicts something very common on schools (if not as melodramatic), the lack of confidence and courage to talk things leaving someone smarter/cunning/douchier to take advantage of it is something that happened to everyone at some point or another on our lives.
Is still depressing, and there's a certain unhealthy NTR attitude at the end but is pretty down to earth and the art is really easy into the eyes. Now can we get more Nekoyama and Inugami please?