Iimura Sayori

She is Chihiro's best friend. The grades are pretty good, but she is withdrawn and has few friends in the class. She met the main character through Chihiro, but she's in a state where she's having trouble talking with just two people. In a sense, she contrasts with Chihiro, who is lively and caring, but I wonder if the horses fit, and only Chihiro is on good terms.
Perhaps because of her weakness, she is taken advantage of by various monsters.