Nayeon

On September 15, 2010, Nayeon secretly attended JYP Entertainment's 7th Open Audition after which she became a trainee. In 2013, she was cast as a member of 6mix, a JYP girl group that was planned, but never debuted. She also made an appearance in the second episode of KBS2's 2012 Korean drama Dream High 2. In 2015, Nayeon participated in the reality television show Sixteen, a competition designed to choose the founding members of Twice. As one of the nine successful participants, she went on to join the newly-formed girl group Twice. In October, 2015, Nayeon officially debuted as a member of Twice with their first extended play, The Story Begins. In Gallup Korea's annual music poll for 2017, Nayeon was voted the sixth most popular idol in South Korea, ahead of all her bandmates. In the 2018 poll, she was again ranked sixth, receiving 6.7% of the votes. In 2019, she was ranked fifth, receiving 8.2% of the votes.

Im Na-yeon (Korean: 임나연 ; Hanja: 林娜璉 ; born September 22, 1995), known mononymously as Nayeon (Korean: 나연 ), is a South Korean singer. After participating in the reality survival television show Sixteen in 2015, she became a singer in the South Korean girl group Twice formed by JYP Entertainment. Nayeon has been described as one of Twice's lead vocalists and dancers, and often takes the position of "center" during dances. She is the oldest member of Twice. For two years in a row (2017 and 2018), she was voted the sixth most popular Korean idol in Gallup Korea's annual music poll, and in 2019 she was voted fifth.