[4] Lim made his debut in 2008 as a member of the DSP Media boy band A'st1.

[8] In 2015, Lim began uploading vocal covers of popular songs to YouTube, bringing him attention as a solo artist.

[2][9] Lim made his solo debut on March 17, 2018, with the song "On the Way", released as part of the soundtrack to the South Korean TV series Misty.

[11] The song was certified platinum for 100 million streams in South Korea in 2020.

[12] On June 13, 2023, a soundtrack album for the Disney animated series Hailey's On It!