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Cognomen ヒロト (ヒロト , Hiroto , Kuwahara ) , around the globe, is a common last name. The surname ヒロト is habitual in Japan, where it is quite a common surname, Fiji, where it is quite a rare surname, and Slovenia. In absolute terms, it is commonest in Japan, the United States, and Brazil. Much less frequently, ヒロト is the forename as well as the last name.