劇場版 青の祓魔師

True Cross Academy Town is preparing for a festival it holds once every eleven years when Rin Okumura, his brother Yukio, and Shiemi Moriyama are sent to exorcise a runaway Phantom Train. A small demon slips loose in the chaos, and Rin, punished for wrecking the mission, is ordered to look after the child-like creature he names Usamaro instead of exorcising it. As the festival nears, Usamaro's habit of making troubles disappear starts pulling the exorcists away from the barriers that keep demons out of town.