One day, high school girl Sonoko forgets something, so she returns to retrieve it. She glances out the window and spots a boy in the schoolyard, surrounded by unconscious, bleeding bodies! The boy is Narusawa, with blood running down his cheek and a dangerous look in his eye. He is one of the toughest guys in the school, having beaten up the men at his feet. He senses Sonoko watching him and turns toward her. Sonoko's school is co-ed, but girls only attend classes with girls, and boys with boys. At this school, most of the boys are loud, rude, dangerous, violent gang members. Most girls know to stay far away from them. But things are about to change when this kind of boy asks her to be his girlfriend—the dangerous Narusawa-kun himself! He waits for Sonoko after school and follows her around. He seems to really like her! What should she do? Narusawa has a different side to him that he is willing to share with Sonoko. He can be kind and funny. What a strange couple they would make! There are many obstacles in their path to love. Narusawa is willing to tackle them, but can Sonoko face her own fears?