The Exorcism Cram School students are having a ball with Shima's birthday-based fortune-telling. When they discover that Izumo's birthday is coming up, they hit upon the idea of throwing her a surprise party.

Southern Cross Monastery, where Rin and Yukio grew up, has come under attack by a mysterious assailant. Leaving behind these cryptic words: "I will never forgive anyone related to Satan," the masked assailant escapes.