During a 3-day drill to prepare Rin and fellow Ex-Wires for actual combat, Amaimon suddenly appears and takes Shiemi as a hostage to lure Rin. Angry, Rin fights Amaimon and he ends up going berserk! He regains control of himself only to be captured by the current Paladin, Angel, and sent to the Vatican for trial. As the hearing drags on, the Order finds itself unable to decide on Rin's fate, as Mephisto has proclaimed him to be "a weapon for counter-attacking Satan." Rin is now forced to obey the Vatican's order or face execution!
Blue Exorcist Vol. 4 (Bilingual Edition)
A Fun Camping Trip