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In all the world, 圭 (Kei , 圭 ) is a common epicene first name. The first name 圭 is characteristic of Eastern Asia, particularly Macao, where it is a common gender-neutral name, Hong Kong, where it is quite a common epicene name, and Mongolia. In absolute terms, it most frequently occurs in Eastern Asia, particularly Hong Kong, Japan, and China. Likewise, 圭 is the last name as well as the forename.
圭 is also a name for the fictitious and mythical characters: Kei Shirogane , the fictional character from Kaguya-sama: Love is War; Kei , the fictional character from Dirty Pair; Kei Tanigawa , the fictional character from Akebi's Sailor Uniform; Qin Qi , the fictional character in Romance of the Three Kingdoms and Kei Kamatori , the No-Rin's character, among other works.