Katsuragi Kiyo suddenly inherits a mansion from a grandmother she has never remembered meeting. Awesome, right? And being a poor student Kiyo happily accepts. But what if this mansion turned out to be haunted? And haunted by what? Ghosts? Oh no, in this mansion there aren't any ghosts, but Vampires. Let's see if dear ol' Kiyo still thinks she’s so fortunate living with two Vampires.