A boy has his life turned upside-down when an extended family of underworld creatures moves into his house, among them a vampire, an invisible girl, and a hyper-active girl with a halo above her head named Noelle.

Yuusuke was just a normal kid going to high school. Then one day, the cute and be haloed Noelle fell, quite literally, into his life, naked as a baby and every bit as innocent. Before he can even fathom what's just happened, Yuusuke is inducted into a rather odd family of otherworldly beings. Papa is a Frankenstein monster with a taste for calisthenics. Mama is a gorgeous lady with a penchant for "round objects" -- really. The eldest sister, Sara, is literally invisible; the brother, Gabriel, is a teenage vampire with an attitude problem; and the youngest sister, Ruka, loves inventing things. There's a disapproving Grandma, who's a witch to the nth degree, and her vulture familiar. All Yuusuke wanted was for the beautiful Natsumi to even notice his attention, but now he has an angel-in-training to follow him wherever he goes. And Noelle, too, has a guide on her path to being an angel, the mysterious Michael.—AnimeNfo

Yuusuke as a shy, unassuming high school student whose father has gone abroad and left him alone at home for the first time in his life. He doesn't suspect how much his life is going to change -- on his way to school he stumbles upon a naked girl, with a halo over her head, sleeping in the forest. She wakes up and proclaims that he's her husband. He runs away but can't escape -- she's the new student in his class, and her family of Munster look-a-likes have moved into his house. After overhearing him declare to his unresponsive crush that she's like an angel to him, Noelle (the girl with the halo) declares that she's going to become an angel for her Yuusuke. There's a villain in the underworld who wants to make sure she never becomes an angel -- she has the halo and just needs to sprout the wings -- but the villain's agenda is not revealed until later in the series. Sugary-cute and excessively pink, the series starts of extremely cute but becomes darker and more twisted at the end.—Slip Kid