Isak N Jiyeon (이삭 N 지연) was a Korean female duo formed by SM Entertainment in 2002 that has since been disbanded. Jiyeon was involved in SM's project named The Grace, a four-member Korean girl group that sings, dances and acts. Isak was featured in the SM Town albums and videos and continued to do a variety of work, such as being DJ and VJ for Arirang TV, MC work for various networks, and taking on small acting roles on network television.
Kim Isak (김이삭) (b. (1985-05-25) May 25, 1985 (age 29) in Frankfurt), real name Ida Dene Simmons, has been a VJ for Pops in Seoul on Arirang TV. She left SM Entertainment in 2012 and is now a DJ for "Kpoppin" on Arirang Radio.
Lee Jiyeon (이지연) (b. (1984-02-18) February 18, 1984 (age 30)), is now known as Lina from The Grace. She is an actress in TV dramas and musicals.