A classmate of Fuuko and Ruka, she was in the same class as Ruka in middle school. She is a quiet but a very smart student, she is cold toward others but many think of her as a cool beauty and secretly admire her. She has a hard time telling people her true feelings. She likes Natsuki alot and would do anything for him. However, her confession just right after that incident took place caused Natsuki to think that she is with him out of her guilt and pity. The insecurity of Natsuki is resolved later in the series.