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In the entire world, 光司 (光司 ) is a very rare masculine first name. The forename 光司 is habitual in Eastern Asia, particularly China, where it is an extremely rare male name.
Guangsi, Kohji, Koji, Kouji, Kōji, Кодзи, كوجي, こうじ, コウジ, ミツジ, 光二, 光治, 功治, 孝二, 孝司, 孝治, 宏二, 宏治, 康二, 康治, 恒二, 晃司, 浩二, 浩司, 浩治, and 耕司