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To My Beloved Thief

To My Beloved Thief () is a 2026 South Korean television series written by Lee Sun, directed by Ham Young-geol, and starring Nam Ji-hyun, Moon Sang-min, Hong Min-gi, and Han So-eun. The series depicts the story of an uinyeo who secretly becomes a righteous thief, chased by a grand prince who loves solving crimes. It aired on KBS2 from January 3, to February 22, 2026, every Saturday and Sunday at 21:20 (KST).

Synopsis

Set in Joseon, the series follows Hong Eun-jo, a commoner hiding her secret life as the righteous thief Hong Gil-dong, who steals from the rich to help the poor. She attracts the attention of Yi Yeol, a grand prince tasked with capturing her. One night, the souls of the two individuals are swapped, triggered by a mysterious bracelet given to them by a young monk, forcing them to navigate each other's worlds amidst the complexities of duty, identity, and forbidden love.

Cast

Main

Born to a yangban father and a commoner mother, she was legally considered a commoner due to her maternal lineage. When her family's fortunes declined and her father fell ill, she became the family's main support. She is a female physician (uinyeo) and thief, known as Hong Gil-dong in the shadows, leading a double life. A skilled healer by day at Hyeminseo, she treats the sick. A thief by night, she steals the granaries and other goods from corrupt officials to help her people.
A grand prince. He lives a seemingly quiet royal life in the shadow of his brother, the King of Joseon, but he's actually resourceful and often sneaks into investigations at the Bureau of Research and Statistics, racking up successes. Then he meets Eun-jo and falls for her without realizing she's the thief he's been chasing.
Yi Yeol's rival. He has lived under his father's strict control, suppressing his own desires and following his father's plans. He has consistently prioritized his father's expectations, pursuing education and career paths dictated by his father, leaving his personal life and aspirations unfulfilled. The arrival of Eun-jo at his family's mansion marks a turning point, as he experiences unfamiliar emotions and desires, gradually becoming aware of his suppressed emotions.
Born into a noble family, she's Jae-yi's fiancée and the queen's niece. Their engagement was a strategic family arrangement, not a reflection of their personal desires.

Supporting

Jae-yi's father.
Yi Yeol's bodyguard.
Eun-jo's older brother.

Production

Development

Ham Young-geol, who previously helmed KBS Drama Special: The True Love of Madam (2023), was attached to direct. Lee Sun, who won the Excellence Award at Studio Dragon's 2nd Drama Script Contest for the series in 2020, wrote the screenplay. The production is handled by Studio Dragon. Additionally, the series, written by Lee, began serialization on Naver Webtoon on December 27, 2025.

Casting

In October 2024, Nam Ji-hyun and Moon Sang-min were cast to star.

Ha Seok-jin, Choi Won-young and Hong Min-gi were reportedly set to join the cast in April 2025. On September 10, Han So-eun was reportedly cast.

Filming

Principal photography began in March 2025, and was concluded in October 2025. Filming for the series took place in Gyeongnam Province over a period of eight months. The main filming locations included the House of Choi Champan in Hadong-gun, Ildu House in Hamyang-gun, Sam-eunjeong in Miryang, and Hwangmaesan mountain in Hapcheon.

Original soundtrack

Part 1

Part 2

Part 3

Part 4

Part 5

Viewership

References

External links