Last month, SS501's Kim Kyu Jong released his music video for "Confession", which is a track for the Never Ending Love TV movie, part of an eight installment omnibus series named, Superstar. The music video for the next part - Black City - has been revealed, starring Bae Seul Gi, who is the lead actress alongside SS501's Kim Hyung Joon and Son Ho Young. The track is called "I Don't Know Why", and it features Bae Seul Gi's powerful and emotional vocals. Check it out below: http://www.youtube.com/watch?v=SrFrHWtmyBg The trailer for Black City was revealed last year, although a release date for the series has not been confirmed. http://www.youtube.com/watch?v=eS1Q3C27vgY Much thanks to jackuon for the tip.