Lee Se-young is a South Korean actress. She debuted as a child actress in 1997 and was best known for her roles in Dae Jang Geum (2003), When I Turned Nine (2004), Lovely Rivals (2004), and The Wonder Years (2007). She is best known for her leading roles in The Crowned Clown (2019), The Red Sleeve (2021), The Law Cafe (2022), and The Story of Park's Marriage Contract (2023).

Jewel in the Palace is a 2003 South Korean historical drama television series directed by Lee Byung-hoon. It first aired on MBC from September 15, 2003, to March 23, 2004, where it was the top program with an average viewership rating of 45.8% and a peak of 57.1%. Produced for US$15 million, it was later exported to 91 countries and has earned US$103.4 million worldwide, being known as one of the primary proponents of the Korean Wave by heightening the spread of Korean culture abroad.