Source taken from Wikipedia.com
Trinity Blood is a series of Japanese light novels written by Sunao Yoshida with illustrations by Thores Shibamoto and originally serialized in The Sneaker, freely inspired by a historical personality, Caterina Sforza. Set 900 years after an apocalyptic war between humans and vampires, the series focuses on the on-going cold war between the Vatican, the human government, and the Empire, the government of the Methuselah.
Fighting on the Vatican's side is Abel Nightroad, a Crusnik–a vampire that feeds on vampires. A blend of sci-fi, fantasy, and political intrigue, as some in the Vatican and the Empire strive for peace, the Rosen Kreuz Order will do anything to stop it.
