[1] In 2019, he played on the main Japanese tour but also played a number of events on the second-tier Japan Challenge Tour, winning the Heiwa PGM Challenge I Road To Championship in May.

At the time, he wasn't a full Korean Tour member and only played after playing in a Monday qualifying event in which he finished in the final qualifying place.

He made a birdie at the 17th hole and had a final round of 67 to win by one stroke.

[1][2] In May 2021, Kim had a final round of 58 in the Golf Partner Pro-Am Tournament, finishing in a tie for 11th place.

He was voted 2022 Korn Ferry Tour Rookie of the year.