Sara K

On December 15, 2021, Sara K made her debut with the self-produced digital single, "On My Way". The song was produced by herself and Yu1L as students of (DIMA) in the college's recording studio. Sometime in late 2022, she became a member of DIMA's student-formed nine-member project girl group ONEST.

On January 25, 2023, Sara K wrote lyrics for the single "Moonlight Trap", a collaboration between indie singers D Rose and Marte. Two days later, on January 27, Sara K debuted with ONEST with the release of the digital single "Wisp", which was produced by fellow member Yu1L who previously worked with her for her debut digital single.