RustBlaster(2005)

RustBlaster

At Millennium Academy, elite vampires are trained to maintain balance in a world where humans and vampires, who possess far greater physical strength than their human neighbors, coexist. When Aldred, the most distinctly un-vampire-like vampire to be found in the entire institution, meets Kei, a human transfer student to the school, their destinies become surprisingly intertwined, and the fate of the world as they know it comes to lie in their hands. Will the unlikely duo be able to break the vicious cycle of blood and chaos that comes every millennium on the ominous night of the Twin Moons?

(Source: Yen Press)