Cinderella and Four Knights had a star that was best known as a member of what group?
Cinderella and Four Knights: Cinderella and Four Knights () is a South Korean television series starring Jung Il-woo, Ahn Jae-hyun, Lee Jung-shin, Park So-dam, Choi Min and Son Na-eun. Son Na-eun:  She is best known as a member of the South Korean girl group Apink.
Apink