Tomoya Okazaki is a delinquent who feels he would never amount to anything. He skips school and aims to squander his high school days with his friend Youhei Sunohara. While heading to school one day, Tomoya notices a little girl murmuring quietly to herself. Without warning, she yells "Anpan!" (a popular Japanese meal), drawing Tomoya's attention. He quickly learns that the girl's name is Nagisa Furukawa and that she screams things she enjoys to inspire herself. Nagisa claims they are now friends, but Tomoya walks away, dismissing the meeting. Tomoya, on the other hand, notices Nagisa more and more around school. He eventually relents and befriends her. Tomoya discovers Nagisa has been imprisoned.