二色 青

Hana and Itsuki's friend. She is a cold-headed girl who has a slightly cynical personality. With Hana being so indecisive and Itsuki being so exuberant, she often finds herself a coordinator between them, but occasionally she enjoys poking fun at them and seeing their reactions.
Obsessed with B-tier movies, particularly fond of shark action flicks.

Aoi lives next door to Ai Isshiki, with whom she has had a sisterly relationship since childhood.