In April 2021, the 22-year-old employee started working with the company as Afreeca Freecs' initial ADC. Leo and his squad finished sixth overall during the regular season and playoffs in the 2021 LCK Summer Split. They made a potent bot lane tandem when paired with the support Lehends.
Teddy, a former T1 ADC player, was signed by Afreeca Freecs for the 2022 season even though the team had recently changed its identity to Kwangdong Freecs. As a result, Leo was demoted to the role of fill-in ADC for the remainder of the year and never participated in an official match. Leo began his professional career as a sub for SK Telecom T1, where he remained for nearly two years. He was able to play a few games on stage during the 2018 LCK Summer Split despite being a substitute.