Invasion By the Vampire Army

In 1960, ludwig, the vampire king, declared war on humanity in search of "slavery to vampires." captured west germany with lightning. in response to that, vampires who had lived quietly until then rose up one after another, and the whole world fell into havoc. after that, allied forces by several vampire kings took control of east germany and eastern europe countries, and finally some of the forces invaded the principality of herweitz. it was to have conquered the neuendorf region in the north. the story begins in 1970, when the principality of herweiz's army, the "entanglement knights unit," is about to recapture neuendorf.