The full moon shines in the sky. In the light, a red shadow is running like the wind. Holding a Japanese sword in his hand, he jumps from building to building. He runs in order to save his brother, in order to realize his dreams, and… When he finally finds his enemy, he will grin with his shining fangs because he knows now that he can beat any enemy. The Special Area - it is the only place where the vampire, the ones who are supposed to destroy, and human beings can live together. In this place, where two vampires, Mochizuki Kojiro and his brother Kotaro, and a human being, Katsuragi Mimiko, meet, a new fate is waiting for them. 
A story of life and death colored by black and red, and the vampires that control them begins. You’ll be the witness to the legend of a bloody race that lives in the shadow.

Source: AniDB