Aoi Oribe

Aoi is Sanas cousin and her parents own the apartment building that Sana lives in. She prefers to be called Aoichan instead of Aoisan despite the fact that she is a year older than Sana. She wears glasses and has a busty physique. She loves to read books and is very energetic and clumsy. She has a very highpitched voice and has a childlike character.