Aya is a third year high school student who is the most prolific member of the school's crafts club.
She is gentle and rather kind, and does not realise that her gentility and friendliness might cause people pain. She does not seem aware of Matsuri's feelings for her.
Aya is very friendly to Shizuka and affectionately calls her "Shii-chan".
She turns down Matsuri's confession, telling the younger girl that she sees her as a cute underclassman with whom she is friends and does not see her as anything more.