The Revival of the Vampire Empress!

Over five centuries ago, the golden age of vampires came to a sudden end as humans hunted them almost to extinction. During the climactic battle between humanity and the vampire race, the vampire leader had her body sealed in a coffin and was put into a deep sleep. Now, in the modern era, she is accidentally awakened by a teenage boy. To adapt to this new world and prepare for her planned invasion of the human realm, she hides and lives in the boy's home. She waits for the right moment to strike.