Iijima Miyuki is one of the top runners of Uzuki Gakuen; she is also Ai's best friend. Compared to her friend Ai, she is bit of a tomboy at times, and a bit tempered, too.

In the TV Serie, she begins to get attracted to Tsuyoshi, which causes friction between her and Ai at the end of the serie. In the OVA, she is there to give support of Ai, whenever possible. Also, in the TV Serie, Dogeza Master has a crush on her.