Tokiko Hishigata

Оригінальне ім’я: 菱形朱鷺子

__Height:__ 150 cm Tokiko Hishigata is Sou's younger sister, a first-year high school student. She is intelligent and has the top grades in her grade, but she is physically weak and not good at sports. She and Mio have known each other since childhood and are classmates at the same high school.