Vampire Sensou  

Vampire Senso, ヴァンパイヤー戦争

The ova takes place in the rural american west, where a violent attack on a nasa base in arizona captures the attention of french secret service agent, lassar. this occurs after a deceased cia agent is discovered floating in the seine river in paris. despite initial skepticism, lassar becomes convinced that these two events are linked and embarks on an investigation to prove it. his search leads him to lamia vindaw, a film star, and a vampire cult with a potentially dangerous and sinister nature.