Reimi Odajima

A girl who attended the same middle school as Miyako and became obsessed with her when she beat up a boy who Reimi had a crush on, but who liked Miyako. Since finding out that, Miyako joined the kendo club. She follows her to every tournament, taking countless pictures and recording videos of her. Miyako is very disturbed by her stalking, and has lost a few matches due to being distracted by her.

(Source: Wikipedia)