can't believe there's no search result for this. anyway, here goes. this is one heck of a cool anime and it's about vampires, the vatican, the rosenkreuz orden (which, by the way, is also mentioned in the da vinci code. or was it the contra mundi? i forgot.)
what makes it cool is that the character designs are relatively original, the plot is original, the anime itself is original.
the protagonist is a vatican priest who is also a vampire... WHO SUCKS THE BLOOD OUT OF OTHER VAMPIRES.

cool, huh?
okay, i know you might say "oh dear, bampira bampira na pud, kapoya na baya" but try checking this anime out. it's really awesome. but don't take my word for it, try watching it yourselves. and if fore some reason you can't download, just PM me i have all the eps and the OST as well.
here's a summary:
The background is in the distant future after the destruction brought about by Armageddon. The war between the vampires and the humans continue to persist. In order to protect the humans from the vampires, Vatican has to rely on other allies to counter the situation. The protagonist, a priest called Peter Abel Nightroad, travels through the countries as a representative for the Vaticans. However, he is also part of "Ax", a special operations group controlled by the Cardinal Catherina. His encounter with a young girl called Esther will determine the struggle and survival between the human race and the vampires.