Ayano Sato

Yumas lifelong friend. They are very close. Ayano is the ingenue of the group. She wears glasses and her hair in plaits implying an innocent personality though she has a vivid imagination which often leads to perverted fantasies as hinted in her eyecatch. By far the most dimwitted of the group but out of all the main characters she is the only one with a steady boyfriend Takanori Shimotakatani. Source: Wikipedia