Aoi Kitahara

Motoko and Kitahara are classmates in middle school, and later, in high school. She likes Kitahara, though she never openly tells him so. They are, at the minimum, close friends, and Kitahara treats Motoko especially kindly. However, after meeting Shuu Iura, Kitahara seems to have directly his attention towards him, much to Motoko's displeasure.