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Globally, アヤカ (Ayaka , アヤカ ) is quite a common unisex first name. The first name アヤカ is characteristic of Japan, where it is quite a rare feminine name, Nigeria, where it is a rare epicene name, and Hong Kong, where it is a rare female name. In absolute terms, it most frequently occurs in Japan, Nigeria, and India. Much more frequently, アヤカ is the last name as well as the forename.
アヤカ is also a name for the fictitious and mythical characters: Kamisato Ayaka , the playable character in Genshin Impact and Ayaka Yukihiro , the fictional character from Negima! Magister Negi Magi.