ALLDAY PROJECT MEMBER
Youngseo
Early life
Lee Youngseo trained for roughly five years across SM, Source Music, BELIFT, and THEBLACKLABEL. She competed on R U Next?, earned a place in ILLIT’s original debut lineup, and left before debut for reasons that were not publicly detailed.
Career
Her ALLDAY PROJECT debut in 2025 turned one of fifth-generation K-pop’s biggest “where did she go?” questions into an answer. She is the group’s clearest conventional vocalist and the member fans most often demand to hear more from.
Fandom file
Youngseo survived the trainee conveyor belt, won a survival show, left the prize, and still debuted somewhere stranger. She is either very brave or deeply allergic to easy career paths.
For the full lineup, discography, reviews, and sourced tea, go to the ALLDAY PROJECT page.