Lee Ju Yeon (이주연, also known as Juyeon or Jooyeon) is a South Korean singer and actress under MYSTIC Actors. She is a former member of the girl group After School and their sub-unit After School Blue.
2009–2015: After School
On July 20, 2011, she debuted as a member of the sub-unit After School Blue with the single "Wonder Boy".
On December 31, 2014, she announced her graduation from After School following five years of activities. She, along with Jung Ah, were the only members to participate in all of After School's promotions.
2015–present: Acting career
On January 18, 2015, it was announced she had signed with Better ENT as an actress. Her contract with the agency expired in 2018, and she decided to renew.