Seonghwa

On October 24, Seonghwa debuted as a member of KQ Entertainment's first boy group, ATEEZ, with the release of the mini album Treasure EP. 1 : All To Zero. On October 16, 2020, KBS’s upcoming variety drama Imitation announced its star cast of idol actors.

Seonghwa played Seyoung, a member and leader of the group Sparkling. The first episode aired on May 7, 2021 while the 12th and final episode aired on July 23, 2021.