May 1, 2022-present
Yoon Seoyeon (윤서연) is a South Korean singer under MODHAUS. She is a member of the girl group tripleS and its sub-units +(KR)ystal Eyes, LOVElution and ACID EYES.
In 2023, Seoyeon was a constant of the Mnet's survival show "Queendom Puzzle", she was eliminated after ranking 24th.