Rika Saginuma

Rika was once the star of her school, because she was the best at high jump but after an injure she couldn't go on and never jumped again. Also her boyfriend broke up with her and started to go out with the new star of athletic sports. Rika can't deal with the younger girl's presumed superiority and the stress at school. With the chatname 11 she finds people sharing the plan to destroy the school.