Insecure and bespectacled student Karin Karino experiences the bumpy ride of first love in this touching drama set against the backdrop of typical high school life. When she becomes handsome Kiriya's object of affection, she wonders if she can truly deal with the consequences. Upon finding out that Kiriya had asked Karin to be his girlfriend, Karin's schoolmate Yuka bullies her and pushes her down a stairway to depression. Later, Kiriya asks Karin to go on a trip over their summer vacation, but things don't go as planned. Can Kiriya bring Karin happiness? Or does his love just spell trouble?