Life can be hard under the same roof with the love of your life - especially when she's a literal goddess! Such is the fate of Earthling mortal Keiichi Morisato, a situation made more difficult by the the constant presence of his goddess love Belldandy's two sisters. But when the sisters are called back to Goddess Central for training, Keiichi's fantasies of quality time go into high gear until Belldandy collapses after stopping a ninja invasion! Keiichi must figure out which supernatural medicine to use to revive his love. His only choice: try the potion out on himself first and see what happens! Keiichi gets his girlfriend back all right, along with a new problem: he turns partially into a girl himself! Hey, nobody said love was easy!