Who Are You? (2013 TV series) Who Are You? Who Are You? (Korean: 후아유; RR: Hu-a-yu) is a 2013 South Korean television series starring So Yi-hyun, Ok Taecyeon and Kim Jae-wook. It aired on tvN from July 29 to September 17, 2013 on Mondays and Tuesdays at 23:00 (and simultaneously broadcast on OnStyle) for 16 episodes.