The Night Watchman

Jung Il-wooas Lee Rin / Prince Wal Gang

Ko Sung-heeas Do-ha

Ko Sung-hee, born on June 21, 1990, is a talented South Korean actress known for her captivating performances in various television dramas and films. Raised in the United States due to her father's position as a professor at the Ministry of Foreign Affairs, she holds dual citizenship in South Korea and the U.S. Fluent in English and Japanese, Ko made her acting debut in 2013 with the film Ethics of Fury. Her breakthrough came later that year when she played a significant role as Minami, a Japanese flight attendant, in the film Roller Coaster, directed by Ha Jung-woo. Ko's rise in the television industry began with her role as Kim Jae-hee, the rival of the main character in the MBC drama Miss Korea (2013). She gained further recognition for her leading roles in the historical drama Diary of a Night Watchman (2014) and the romantic sci-fi series My Holo Love (2020). Her impressive portfolio also includes notable performances in While You Were Sleeping (2017) and Mother (2018), solidifying her status as a prominent figure in the South Korean entertainment industry.

U-KNOW Yunhoas Moo-seok

U-Know Yunho, born Jung Yunho, is a prominent South Korean singer and actor, recognized primarily as the leader, lead vocalist, main rapper, and main dancer of the iconic boy band TVXQ. Born on February 6, 1986, he has made a significant impact on the K-pop scene since the group debuted in the early 2000s. In addition to his musical achievements, U-Know Yunho has ventured into acting, showcasing his versatility and talent in various television dramas and performances. His contributions to the entertainment industry have earned him a dedicated fanbase and solidified his status as a multifaceted artist. Whether on stage or screen, U-Know Yunho continues to captivate audiences with his charisma and skill.

Seo Yea-jias Park Soo-ryeon

Seo Yea-ji, born on April 6, 1990, is a South Korean actress and model known for her compelling performances in television dramas. She began her acting career with a role in the sitcom "Potato Star 2013QR3," which aired from 2013 to 2014. Following her debut, she gained recognition through various roles in period dramas and thrillers, including "Diary of a Night Watchman," "Last," and "Moorim School: Saga of the Brave." Seo's talent truly shone in the thriller series "Save Me" in 2017, earning her the title of 'New Thriller Queen.' Her career reached new heights with the 2020 romantic comedy "It's Okay to Not Be Okay," where she played the role of the anti-social author Ko Moon-young. The series garnered international acclaim, with The New York Times recognizing it as one of the best international shows of the year and praising Seo's mesmerizing performance. In January 2020, she signed with the newly established entertainment agency Gold Medalist, becoming one of its senior actors alongside Kim Soo-hyun. Seo Yea-ji continues to captivate audiences both in South Korea and worldwide with her versatile acting skills and engaging screen presence.

Kim Seung-ohas Sadam

Kim Seung-oh is a South Korean actor known for his contributions to both film and television. He begins his career in 2000 as a member of the theater troupe Actor's World, where he hones his craft and showcases his talent on stage. In 2009, Kim gains recognition as part of SBS's 11th talent recruitment, marking a significant step in his acting career. Before fully transitioning to television, he appears in films such as "Emergency Measure 19" and "Chungpoong Myungwol," as well as in the drama "Sad Song." With a diverse portfolio, Kim Seung-oh continues to captivate audiences with his performances across various genres, establishing himself as a respected figure in the South Korean entertainment industry.