[2][3] He has appeared in numerous television series, including Hospital Playlist (2020–2021), Miracle: Letters to the President (2021) and The Veil (2021).

On stage, Jung has also participated in various productions, including the musical Maybe Happy Ending (2016).

He took a year off from college to prepare for his debut as a singer, but he had to enlist in the military.

[5][6] While serving in the military, Jung contemplated his career options and wondered if he could combine his love for singing and acting.

Fortunately, soon after his discharge, he had the opportunity to audition for the musical Subway Line 1 [ko].