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In the entire world, 夏子 (Natsuko , 夏子 ) is quite a rare dominantly girly, but uncommonly boy's first name. The forename 夏子 is habitual in Japan, where it is quite a rare principally girly, but scarcely masculine name, Australia, where it is a rare feminine name, and China, where it is a very rare unisex name. In absolute terms, this name is the most popular in Japan, China, and the United States. Much less frequently, 夏子 is the last name as well as the forename.