Trinity Blood - S01

After Armageddon, an apocalyptic war, mankind faces yet another threat: vampires. Ongoing clashes between the races have split the world into separate factions. The vampire race, the Methuselah, are aligned with the New Human Empire, while humans, called Terrans by the vampires, form the Vatican Papal State. On top of that, extremist groups like the Rosenkreuz Order try to reignite war, even as the factions work to avoid direct conflict. To fight terrorist organizations, the Vatican has created the AX unit. Led by Cardinal Caterina Sforza, AX agents investigate vampire-related incidents, hoping that Terrans and Methuselah will someday coexist in peace. Among them is Father Abel Nightroad, a seemingly scatterbrained but kind man who becomes a ruthless vampire slayer on the battlefield. Agent Sister Esther Blanchett joins as his partner, a brave and gentle young nun haunted by a tragic past. As the two grow closer, they begin to find signs of malicious plots and dark forces moving in the shadows. But the road they travel is full of misfortune that may force them to face the memories that weigh on their hearts.