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All around the world, Hirayama (ヒラヤマ , 平山 , Hirayama ) is quite a common predominantly masculine, but scarcely girly first name. The first name Hirayama is characteristic of Eastern Asia, particularly China, where it is a rare male name, and Japan, where it is a rare feminine name. Very seldom, Hirayama is the last name as well as the forename.