Doll Roll Hall Episode 4

During the simultaneous walk-home-from-school events, Keima is attacked by a wave of flying books. The books are being controlled by a small figure. Meanwhile, section chief Nora drops by the Katsuragi residence to see Elsie. It sounds like the Hell Bureau of Peace has issued an order to the loose soul team to search for residents of Heaven. Kanon\/Apollo is currently at the Katsuragi residence. Is this a coincidence?