Harem comedy

Harem (ハーレムもの, hāremumono; "from harem") in anime and manga is an emphasis on polygamous or love triangle relationships characterized by a protagonist surrounded amorously by three or more members of either the same and/or opposing gender, sex, and/or love interests. When it is a yuri or male-hetero oriented harem series, the polygynous relationship is informally referred to as a female harem or seraglios. When it is a yaoi or female-hetero oriented harem series, the polyandrous relationship is informally referred to as a male harem, reverse harem, or gyaku hāremu (ハーレム).

The word derives from Harem, which was a term used to refer to the most private rooms of a household in the Islamic world, especially among the upper class where only women and close relatives were permitted inside.

Because romance is rarely the main focus of an entire series, a harem structure is ambiguous. The most distinguishable trait is the group of polyamorous females and/or males who accompany the protagonist; in some instances cohabitate with the protagonist. While intimacy is just about customary, it is never necessary. When it is present, it is always a minimum of three supporting characters who express sexual orientation and/or the romantic orientation interest in the protagonist.

Harems need not be strictly gender binary or heterosexual; instead of having a male lead character that all the female characters fawn over and desire to be with, a Yuri-themed harem, for example, forgoes this "classical" harem and omits the male lead character. Additionally, it is not essential for there to be one exclusive boy or girl. Many protagonists can exist as long as they are given less attention or the story calls for an unusually obscure sex ratio.

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Wikipedia