Magical girlfriends can be one or many in a single anime (always attached to the male lead). Because of the tendency for rivals to appear even when there is one female lead and because of the unnatural gender balance among the cast, magical girlfriend comedies are often conflated with harem comedies. A good example of this conflation is Oh My Goddess! which is "often called a classic example of a 'harem' anime" despite the short-lived nature of most of the romantic rivalries.