Oh My Goddess, Volume 4 (Oh My Goddess! #24-30)

Ever since a cosmic phone call brought the literal young goddess Belldandy into college student Keiichi's residence, his personal life has been turned upside down, sideways, and sometimes even into strange dimensions!

Half-goddess, half-demon, Belldandy's big sister Urd continues her campaign of naughtiness when she brews up a luuuuuvpotion that, of course, goes horribly awry, infecting everyone but her poor intended target-Keiichi. But random passion in the streets may be the least of the gang's worries as a seemingly harmless CD could turn out to be a portal from the underworld, unleashing a most pesky demon, and any other random nasties that happen to be near her!