Trinity Blood Volume 2
It's a dark time, when vampires and humans are locked in battle against one another. While on a visit to Cartago, Cardinal Caterina, the Duchess of Milan, receives a vampire child envoy. The young boy brings a message from the New Humankind Empress. Could she be asking for reconciliation? Or a declaration of all-out war?
Esther is a nun in the city of Istavan. When she crosses paths with Abel Nightroad, a priest sent from the Vatican to combat the local order of vampires, the two form a holy alliance to battle the most evil of threats: Gyula, the leader of the vampires.
Nothing is quite as it seems when a mysterious weapon called Silent Noise destroys Barcelona and threatens Rome. Now both the city and Cardinal Caterina's life are threatened--and her enemies are even closer than she expects. Meanwhile, her greatest asset, Crusnik Abel Nightroad, has turned against himself and the cause, as a deeply personal loss leads him to question his allegiance to AX.
With the Pope injured and what seems like the entire Vatican turned against them, Esther and Schera must fight for their lives, as well as attempt to reveal Cardinal D'Annuncio's fiendish plot. But with so much blood already shed, can even the Lady Saint and her powerful ally escape unscathed? Then, the curtain closes on the story of Istvan, and a new story begins as Esther and company head towards the island nation of Albion.