His father was a musician in the 1980s, and Jay grew up watching him perform on late-night shows, serving as his inspiration to enter the music industry.

[2] In 2018, Jay was scouted by MBC to appear as a contestant on the survival program Under Nineteen where 57 other male K-pop trainees competed to find a place in the final 9-member boy group.

[6] In December, Jay was announced as a contestant on Mnet's reality competition show Boys Planet, representing FM.

[8][9] On November 30, 2023, Jay debuted in the group One Pact under Armada Entertainment, a company led by Kangnam.

[12] In October 2024, FM announced that Jay would be releasing his second EP Neigborhood on November 22, and it will consists of four tracks that includes his self-composed songs and features One Pact's co-member Tag.