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Throughout the world, 浩二 (Koji , 浩二 , Kōji) is a common epicene forename. The first name 浩二 is habitual in Japan, where it is quite a rare masculine name, Nigeria, where it is a rare dominantly boy's, but seldom feminine name, and Hong Kong, where it is a rare masculine name. Not in comparison with a country's population, the name is most common in Japan, India, and Nigeria. Also, 浩二 is the last name as well as the forename.
浩二 is also a name for the fictitious and mythical characters: Koji Segawa , the fictional character of Kamen Rider J; Kohji Haneda , the fictional character from Detective Conan; Koji Kabuto , the fictional character, Mazinger Z; Koji Makaino , character in Bakuman and Koji Hiraiwa , the character from Kuroko's Basketball, among other works.