Yoo Yena

Sometime in July of 2020, Yena joined the kids girl group, Dream Candy, and made her official debut as a member on September 6, 2020 with the release of their self-titled first digital single, "Dream Candy". She remained a member for the release of their second digital single, but left sometime at the end of 2020. On March 15, 2021, Yena debuted as a member of the kids girl group, Cookie, with the release of their first digital single, "I Guess I Really Like You".

Less than a month later, on April 12, Yena announced her graduation from Cookie. On March 24, Yena joined the second lineup of LUNA KIDS for six months, performing as the center for the single "My Dream". On July 17, 2023, Yena was introduced as a contestant on the SBS survival show Universe Ticket.