Dumbledore always thought that Voldemort was the greatest threat to the wizarding world, until a vampire who had lived for more than a thousand years came to his door with a Hogwarts title deed—a thousand years have passed, and the lease of Hogwarts is up!Dracula said, Mr. Headmaster, you don't want the students to be displaced, do you? What do you want? Dumbledore asked solemnly. Anything interesting. This is easy to handle. I think the position of Professor of Defense Against the Dark Arts is quiteInteresting!... So, Hogwarts has an extra professor who is left alone. McGonagall: Albus, I don’t think Professor Dracula’s teaching is suitable for poor children! Dumbledore: IThere is no way, no one can expel him... Draco: My father is the school manager, I will definitely let him expel you! Lucius slapped Draco on the head, Mr. Dracula,Draco is innocent, you must not dismiss the school board!... This is a story about a vampire who has lived too long and is so bored that he can only find fun in the magic world.