Ok gallery, but is not harem. Harem by its tag definition involves 1 male + 3 or more females. Reverse Harem is 1 female + 3 or more males. Thus, this is closer to reverse harem than it is to harem. Please check tag definitions before using them.
rr123: don't bother, some of the tags try to be "politically correct" which doesn't make sense. There's like one, maybe two true female harem in the history of hentai, rest is gangbang or gangrape.