The sports-loving field captain of the Countermeasures Committee of the Abydos High School. Shiroko is a girl of few words and shows little emotions alike. She may seem aloof with her appearance, but deeply cares about Abydos High School the most.

Due to troubling circumstances happening in Abydos High School, she is willing to do anything to revitalize the school by any means. Often times though her ideas are sometimes ridiculous like proposing to rob a bank for school funds.