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A competition is opened to search for a famous researcher's sealed room. The prize are his research books, and many exorcists are gathered. Natori is invited, Natsume wants to help as this might mean finding something that might let him find information about the Book of Friends.
First Air Date : Jul 08, 2008
Last Air date : Jun 21, 2017
Episode : 75 Episode
Season : 7 Season
Runtime: 24:14 minutes
Country: Japan
