The Teacher is a Devil.Raindevila releases the brutal devil Petora from his prison of stone and sends him to the human world, where he masquerades as a new teacher at Saint Hanazono. Along with his devil henchman Hanma, Petora manages to hypnotize the principal and cancel winter vacation. Upon Scarlet's suggestion, the newspaper club decides to launch a protest through their reporting, but first something must be done about Hanma's spell that has the entire student body attacking the Love Angels.