Nam Yoon Sung
 
Produce 101: Season 2
 
 
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Nam Yoon Sung
 

Native name: 남윤성
Also Known as: Yunsung;Nam Yun Sung
Nationality: South Korean
Gender: Male
Born: August 29, 1996

Nam Yoon Sung is a South Korean singer under LUK Factory. He is a member of the boy group NOIR.