Ryu played for Busan Infrastructure Corporation in 2019. That year Busan won its first championship title in the SK Handball Korea League. Afterwards she transferred to Paris 92 and played in the French Women's Handball First League.[1]
In November 2020, Ryu returned to Busan Infrastructure Corporation, because she was concerned about rising COVID-19 cases in France.[2]
Ryu became the starting right back of the South Korean national team at the 2009 World Handball Championship where South Korea finished in sixth place.[4]
Ryu was named in South Korea's handball team for the 2020 Summer Olympics, where they advanced past the group stage and finished in 8th place overall, the best result for a non-European team.[10]
South Korea qualified for the 2024 Summer Olympics in Paris, where Ryu was again named for the team.[11]