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Around the globe, 正之 (Masayuki , 正之 ) is quite a rare mostly masculine, but infrequently female first name. The given name 正之 is characteristic of Japan, where it is quite a rare unisex name, China, where it is a rare primarily masculine, but scarcely girly name, and Chile, where it is a very rare boy's name. Measured by absolute frequency, it is the most numerous in Japan, China, and the United States. Likewise, 正之 is the last name as well as the forename.