Нацуми Судзухара

Natsumi is Yuusuke's classmate, whom he has a crush on. She is an athletic diver. She is often spied upon by Yuusuke and his classmates from a small window at the diving complex at their school. She has a serious personality.

At the beginning she seems to dislike Yuusuke because she believes he is a pervert, but later begins to get attracted to him. (source : wikipedia)