After signing with
JYP Entertainment, Wonpil was part of JYP trainees' dance team with
Young K, but was later chosen to be part of the company's first band, and, together with
Jae,
Young K,
Sungjin and Junhyeok, he formed the acoustic ensemble 5LIVE. In 2014, he appeared in the program
WIN: Who Is Next?, which saw the trainees of JYPE and
YG Entertainment compete against each others. In 2015, after the joining of sixth member Dowoon, Wonpil eventually debuted as a member of rock band
Day6 on September 7, in which he plays the synthesizer and the keyboard. In August 2020, JYP Entertainment announced that Wonpil, along with DAY6's member Young K and Dowoon, would debut as the first sub-unit
Even of Day. He and Young K made a short appearance in web series
Let Me Off The Earth in October; then in November, he appeared in
BOL4's new music video "Dancing Cartoon". In March 2021, Wonpil made his musical theatre debut in
Midnight Sun, produced by Shinswave. After finishing the musical, it was reported that he was in talks to star in web drama
Best Mistake 3, and in October, the news was confirmed. On December 8, Wonpil featured in Korean
indie duo 1415 title song "naps!" from the EP of the same name. On the same day, it was reported that he was preparing his solo debut for early 2022. Later JYPE confirmed releasing his first studio album,
Pilmography, on February 7, 2022. On February 28, 2022, it was confirmed that Wonpil will expand the first solo concert by two more rounds, including the day before the military enlistment. == Personal life ==