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Unaired 13th canon episode of season 3. Issei goes to the Underworld to help and train Riser Phenex who has lost all confidence in himself by the request of Ravel Phenex.
First Air Date : Jan 06, 2012
Last Air date : Jul 03, 2018
Episode : 49 Episode
Season : 4 Season
Runtime: 24:14 minutes
Studio: AT-X
Country: Japan