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In the world, Ouyang (欧阳 , ナナ , Ouyang ) is quite a rare unisex forename. The first name Ouyang is characteristic of Japan, where it is a rare female name, China, where it is a rare gender-neutral name, and the United States, where it is an extremely rare unisex name. Predominantly, Ouyang is the last name as well as the forename.
Ouyang is also a name for the fictitious and mythical characters: Ouyang Ke , the character in the wuxia novel, The Legend of the Condor Heroes; Setsuna Yuki , the fictional character from Love Live! Nijigasaki High School Idol Club; Nana Himemiya , character in Tetsudou Musume; Nana , the fictional St. Bernard from Disney's Peter Pan and Nana Yotsuya , the fictional character from Ro-Kyu-Bu!, among other works.