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In all the world, カオル (Kaoru , カオル ) is quite a rare epicene first name. The first name カオル is habitual in Japan, where it is quite a rare gender-neutral name, Hong Kong, where it is a rare female name, and Australia, where it is a rare largely girly, but uncommonly masculine name. In absolute terms, this name is the most popular in Japan, the United States, and China. More prevalently, カオル is the last name as well as the forename.
カオル is also a name for the fictitious and mythical characters: Kaworu Nagisa , the character from Neon Genesis Evangelion; Kaoru Niimi , the Anime character from Star Blazers 2199, Space Battleship Yamato 2199; Kaoru Seta , the fictional character from BanG Dream!, BanG Dream! Girls Band Party!; Kaoru Shimizu , character in Major 2nd and Hanayama Kaoru , the fictional character of the Baki the Grappler franchise, among other works.