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All around the world, 金成 (金成 , Kannari , Kanari ) is a common principally male, but very infrequently girly forename. The forename 金成 is habitual in Japan, where it is quite a rare masculine name, China, where it is quite a rare principally masculine, but very infrequently female name, and Algeria, where it is quite a rare mostly boy's, but seldom feminine name. Also, 金成 is the last name as well as the forename.
金成 is also a name for the fictitious and mythical characters: Kanari , the operatic character in the opera Tote Seelen, Dead Souls.