The King in Love starred which South Korean singer and actress?
The King in Love:  It stars Im Si-wan, Im Yoon-ah and Hong Jong-hyun. Im Yoon-ah: Im Yoon-ah (Hangul: 임윤아 ; born May 30, 1990), better known by the mononym Yoona, is a South Korean singer and actress.
Im Yoon-ah