If you have not read or heard about this manga ..
Staz is the vampire boss of a section of the demon world, but he has little interest in human blood. He's more infatuated with Japanese culture. When he learns that Yanagi Fuyumi, a Japanese teenage girl, accidentally wanders into the demon city, he jumps to the occasion. However, while Staz deals with an intruder on his turf, the oblivious Fuyumi is killed by a monster and becomes a wondering ghost. The disappointed Staz vows to her that he will find a way to bring Fuyumi back to life.
It's pretty damn funny...anime is fucking awesome! Action is solid and the pacing is great!