Kawk Ihan

On February 11, 2019, BG Entertainment introduced Gun as a new member of 14U following the departure of Doyul. Unfortunately, on May 13, 2019, BG Entertainment confirmed the group had disbanded, thus he could not make his debut with them. On March 28, 2024, Kwak Gun is introduced as a pre-debut member of ASTEON through a prologue film released on their official accounts.

On September 29, 2024, Kawk Gun was introduced as a contestant on the Chinese-South Korean survival show Starlight Boys. On November 23, he was eliminated in episode 5. In April 2025, he changed his name to Kawk Ihan.