Akane is a quiet girl in the same class as Kōhei. She meets him on a rainy day, standing by herself in an empty lot with a faintly sad look on her face. She enjoys cooking and making her own boxed lunches. She does not really open her heart up to those around her, and any time Kōhei tries to do something for her, she replies, "no". The sole person she can talk normally with is Shiiko. She was born with an incurable sweet tooth and pulls her long hair together.
Her childhood friend she fell in love with, Tsukasa, disappeared into the Eternal World in the same lot she waits in. Ever since, she continues waiting in that empty lot on rainy days, holding a pink umbrella, waiting for him to return.