The vampire, Staz C. Blood, is one of the most powerful district bosses in the demon world, fending off everyone who dares challenge him. But secretly, Staz is also quite obsessed with human culture, especially video games, manga, and everything that comes from Japan.

When Staz makes a decision that he wants something, he's known for always accomplishing his goal and getting or doing whatever it is that he set out for. So, when the young Japanese girl, Fuyumi, wanders into the demon world by accident and dies, Staz declares that he'll help bring her back to life and is determined to do just that. And in helping her he also gets the chance to travel to the human world, somewhere he's always dreamed of going.

Staz is sometimes viewed by others as having a lazy look about him, though they never do well to underestimate him as he's also very powerful. He has rapid healing abilities, as well as the ability to paralyze weaker demons with his stare, he's able to control humans and alter memories with his saliva, can suck out other demon's magic with his teeth, and can crush someone's heart from afar. He sometimes says things like "I might be a vampire, but first and foremost i'm me" and once lost his temper and nearly killed his friend Wolf while they were fighting when he questioned Staz's reasons for helping Fuyumi, and then scoffed at his statement of being himself before being a vampire. He's very stubborn, and is also notorius for his lack of common sense and his sometimes impetuous behavior.