2019–2020: Produce X 101 and X1
In 2019, he participated in Mnet's boy group survival show Produce X 101 representing OUI Entertainment. He finished in first place, thus becaming the center of X1. The group officially debuted on August 27, 2019 with the mini album, 비상 : Quantum Leap.
However, on January 6, 2020, the agencies representing the members announced the group has disbanded due to not being able to reach an unanimous agreement following the Produce 101 vote manipulation controversy.
- Produce X 101 (Mnet, 2019) - contestant