Lee Sung-jin (이성진) is a South Korean singer and former member of group NRG.
Infinite Challenge
2005 · Self
I'm From Chosun
2004 · 윤덕형
X-Man
2003 · Self
Real Romance Love Letter
Ya Shim Man Man
My Tutor Friend
2003 · Si-kyung
Emergency Act 19
2002 · cameo
