Why was this so good? I always have a soft spot for loners finding friends. Matsubi/Kou is one of those guys who can't be plain about his feelings, but his aloof care for Futaba is sweet. 

Dang, y'all got me hooked for another volume. I also feel like there's some student-teacher relationship brewing with the dark-haired girl Murao, but it looks like Mr. Tanaka shut it down.