Park Yun Sol was a contestant on reality boy group unit survival show BOYS24. He was included in Unit Purple during the show and eliminated on Sharp Dance Routine Mission (episode 3). After training for two years and one month under NEST Entertainment, he made his appearance as a contestant on the boy group survival reality show Produce X 101.
In 2021, after being on the Japanese Idol Survivor Show G-EGG (2020), he officially debuted as a memberof the Japanese-Korean boy group NIK.
