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All around the world, ヒカル (Hikaru , ヒカル ) is quite a rare epicene first name. The first name ヒカル is characteristic of Japan, where it is a rare unisex name, Hong Kong, where it is a rare masculine name, and Indonesia, where it is a rare gender-neutral name. In absolute terms, this name is the most popular in Japan, Indonesia, and Brazil. More prevalently, ヒカル is the last name as well as the forename.
ヒカル is also a popular name for the fictitious and mythical characters: Hikaru Sulu , the fictional character from Star Trek, Star Trek: The Original Series; Hikaru Genji , the protagonist in Heian Chinese tale "The Tale of Genji"; Hikaru Gosunkugi , the fictional character from Ranma ½; Hikaru Shidou , the fictional character from Magic Knight Rayearth and Hikaru Hoshina , the fictional character from Star☆Twinkle PreCure, and in many other works.