Oyamada Kouta's girlfriend, Chizuru, is a fox demon who can't keep her paws off him! Things are going great for the lovey-dovey couple until two new yokai students, the wolfish Ezomori siblings, arrive at school. Little sister Nozomu has decided that she wants Kouta for herself, while big brother Saku wants to destroy the school!
With a new enemy and a romantic rival on the scene, things grow tense between Kouta and Chizuru. Can their love survive Nozomu's advances and Saku's scheming?