Yumegaoka High School Year 1 Class 2 Home Teacher
Diving Club Supervisor, Adviser, Consultant
Shares an interest in scuba diving with Hikari. Had a competition with Hikari when she first went to school and realised that they were diving buddies.
Her car is a Nissan Cube (a mini MPV) called "Pokoteng 3rd-kun".
Very possible the same character in manga "Roman Club", shares exactly the same name with Katori Senkou's older sister. (Amano Kozue tends to cross over blood relatives of main characters.)
