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Surname 浩二 (Koji , 浩二 , Kōji) , throughout the world, is a common cognomen. The family name 浩二 is habitual in Montenegro, where it is quite a rare surname, Japan, and Hungary. Not in comparison with a country's population, it most frequently occurs in Japan, China, and Nigeria. Likewise, 浩二 is the forename as well as the last name.