Каґамі Аой

Aoi Kagami is a supporting character in the Ao no Kanata no Four Rhythm series. She is Masaya Hinata's homeroom teacher, a retired well-known player and the counselor of the Kunahama FC club. She also trained Masaya when he was younger.

Aoi used to be a sky walker prior to the beginning of the story, and it’s made very clear that she stood at the top of the FC world, but she quit and became a teacher. She doesn’t actively participate in the club’s FC training since Masaya Hinata's the Coach, but she’s still around to give them advice when they need help.