Kim Hwan Sung, often called one of the first “flower boys” of K-Pop, debuted with his group NRG in 1997. NRG, or New Radiancy Hope, was among the most popular first-generation boy groups. NRG | Tumblr The group’s original lineup consisted of five members, Kim Hwan Sung, Lee Sung Jin, Chun Myung Hoon, Noh Yoo Min, and…
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