Seto is a completely ordinary and somewhat boring high school student. Yet, for whatever reason, his errant gyaru classmate Anjou just won't leave him alone! The serious Seto and energetic Anjou make a contrasting duo, but Anjou doesn't seem to mind, as she has too much fun teasing him. On the other hand, Seto has a hard time dealing with all of her endless antics; little does he realize that his humorous reactions are precisely the reason Anjou enjoys his company. But... just how much of her flirting is merely an act?