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All around the world, 久 (久 , Takuma , Jiǔ) is quite a common mostly boy's, but infrequently feminine forename. The first name 久 is habitual in Japan, where it is a rare masculine name, China, where it is a rare mostly boy's, but infrequently feminine name, and Nigeria, where it is a very rare epicene name. Likewise, 久 is the last name as well as the forename.
久 is also a name for the fictitious and mythical characters: Takuma Ichijo , the fictional character from Vampire Knight; Takuma Sakazaki , the fictional character from Art of Fighting and The King of Fighters, The King of Fighters XIII; Takuma Tsurugi , the Fictional character; Takuma Saeki , the Hajime no Ippo character and Takuma Aoi , the Battle Royale character, Battle Royale II: Requiem, among other works.