They were inseperable. MinSoo, Byunghun and Minah were the best of friends, and even when MinSoo and Minah started dating, nothing got between their friendship. Then MinSoo started to get into drugs, started partying too hard and even cheated on Minah. They stayed together though...together forever. Forever only lasts so long though. One night Byunghun comes home to his shared apartment with MinSoo and finds his best friend unconscious on the ground. Calling for an ambulance, MinSoo is rushed to the hospital and pronounced dead that next morning. News gets to Minah and while Byunghun can't be there for MinSoo anymore...he HAS to be there for Minah.