Chrono Crusade, Vol. 5 (Chrono Crusade #5)

The toughest nun of New York City has finally found her brother, but their reunion is anything but happy. He's under the sway of the demon Aion, who seeks vengeance upon his old buddy Chrono. In his true demon form, Chrono is up to the evil-stomping action, but our nun with the gun is left too weak to even pull the trigger. Rosette will have to call for a miracle - or at least some back-up!