You returned to the senior level for the 2020 Four Continents Championships in February. She placed third in the short program behind Rika Kihira and Bradie Tennell after a mistake on her triple Axel and an unclear edge call on her triple flip. In the free skate, she delivered a strong performance to place second in the segment with a new personal best score (149.68). She landed all jumps cleanly with the exception of one underrotation on her triple flip. Her combined total (223.23) was also a personal best, and she moved up to narrowly take the silver medal behind Kihira (232.34) and ahead of Tennell (222.97). This competition was the first time she landed all twelve triple jumps possible under the Zayak rule. She expressed satisfaction with her performance overall, for landing the triple Axel, and for overcoming the pressure of performing for a home crowd, remarking that she became the first Korean skater to medal at Four Continents since Olympic Champion Yuna Kim won the event in 2009. She was assigned to make her senior World Championship debut in Montreal, but these were cancelled as a result of the coronavirus pandemic.