[1] In 2021, he represented South Korea at the 2021 World Mixed Doubles Curling Championship alongside Kim Ji-yoon.

[2] While attending Uijeongbu High School, Moon competed in the 2018 and 2019 Korean Curling Championships as third and second respectively.

[7] Later in the season, the pair won the qualification event for the right to represent South Korea at the 2021 World Mixed Doubles Curling Championship.

[2] The duo, both eighteen at the time, defeated 2018 Olympian Jang Hye-ji and her partner Seong Yu-jin 2–0 in the best-of-three series.

[8] Facing Japan's Yurika Yoshida and Yuta Matsumura, the Korean pair lost 8–6, relegating Korea to the 2021 Qualification Event.