Supernova (초신성) or Choshinsei in japanese is a Korean boyband.
Members: Jung Yoonhak(정윤학), Kim Sungje(김성제), Kim Gwangsu(김광수), Yoon Sungmo(윤성모), Song Jihyuk(송지혁), Park Geonil(박건일)
Debut Date: September 21, 2007 on KBS Music Bank
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