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Last name 彩加 (彩加 ) , throughout the world, is an extremely rare cognomen. Much more frequently, 彩加 is the forename as well as the last name.
Ayaka, Caica, Caiga, Caika, Аяка, อายากะ, アヤカ, 彩佳, 彩夏, 彩海, 彩花, 彩華, 彩香, and 綾香