Which actress from Love Rain was also known by the mononym Yoona?
Love Rain:  Set in the seventies and the present day, it tells a love story over two generations, with Jang Keun-suk and Im Yoon-ah playing dual roles. 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