Trinity Blood: Reborn on the Mars Series by Sunao Yoshida

A mysterious terrorist organization is hell-bent on orchestrating a war between the New Human Empire and the Vatican. Special Ops AX Agent Abel Nightroad teams up with a spunky young novice named Esther to try and stop Gyula, the bloodthirsty Marquis of Hungary, from unleashing the legendary Star of Sorrow... moreA mysterious terrorist organization is hell-bent on orchestrating a war between the New Human Empire and the Vatican. Special Ops AX Agent Abel Nightroad teams up with a spunky young novice named Esther to try and stop Gyula, the bloodthirsty Marquis of Hungary, from unleashing the legendary Star of Sorrow.Set against a neo-gothic backdrop, this second Trinity Blood series--connected to the Rage Against the Moons series--promises plenty of action and intrigue as Esther and Abel struggle to save the lives of humans and vampires alike! less

In the distant future, civilization has all but vanished due to the Armageddon. It's a dark time, when vampires and humans battle for supreme control.While visiting Carthage, Cardinal Caterina, Duchess of Milan, plans to conduct secret negotiations with the New Human Empire. It's up to AX Agent Father Abel Nightroad and Sister Esther Blanchett to safely escort the young vampire envoy... moreIn the distant future, civilization has all but vanished due to the Armageddon. It's a dark time, when vampires and humans battle for supreme control.While visiting Carthage, Cardinal Caterina, Duchess of Milan, plans to conduct secret negotiations with the New Human Empire. It's up to AX Agent Father Abel Nightroad and Sister Esther Blanchett to safely escort the young vampire envoy. But do the Methuselah wish to reconcile with the Terran--or declare open war? And will Rosenkreuz Orden destroy all hope for peace? less

"First published in Japan in 2002 by Kadokawa Shoten Publishing Co., Ltd., Tokyo"-- t.p. verso.