Ayano is a first year in high school. She is Yunoki's fiancée. She was also called bishōjo, by Kahoko when she first saw her. Ayano is one of Yunoki's fiancée candidates chosen by his grandmother; she was fascinated by him as a child and became determined to become his wife. Yunoki, however, isn't keen on that idea and enlists Kahoko's help to dissuade her by passing Kahoko off as his lover.
Ayano is perfect in all aspects, except that she has the tendency to give out bad first impressions of herself in front of people.
Ayano attends the same school as Miyabi, though it is hinted that Miyabi herself isn't too fond of Ayano as well.
(Source: Wikipedia)