Kioi Uzuki resides in a contemporary Japanese society where vampires and werewolves coexist with humans. Along with his grandmother, he manages a sharehouse. When the house gets its inaugural vampire tenant, he becomes ecstatic. However, their first rendezvous doesn't go smoothly. It poses a question about how the self-contained and introverted vampire would respond to an exuberant, occult-loving human who intends to befriend him.