Takako was the older sister of Ayako. They had one dog named Hanako. Takako was on track and field thus she had great speed and agility, at least those standard for track and field. At the time, Takako was the record holder for the 200 meter run despite her endurance issues. She was independent, bordering on arrogant. She had deep-seated personal image issues. She had difficulty interacting with her peers. Because of her shy, cold and machine-like composition, accompanied with her loner attitude she was referred to around class as "robo-bitch." Both Takako and Mitsuko Souma were considered to be the prettiest girls in high school.