It was revealed that f(x) member, Krystal will be joining the cast of MBC sitcom, More Charming by the Day. One of the show's director, Sa Hwa Kyung revealed on the 21st that Krystal will be playing the niece of Kim Sung Soo in the sitcom and show her utmost charms. She will begin filming on June 24th and her first broadcast is expected to air from early July. Krystal has previously only appeared in MVs.