100 Days of Deception cast: Meet the stars behind tvN's historical espionage K-drama

tvN's latest South Korean series, 100 Days of Deception, is now available to stream on Netflix globally. Directed by Yoo In-shik and Kim Yoon-jin, the series is set during the Japanese colonial period in 1932 Gyeongseong. The series premiered on October 10, 2026. It airs Saturday and Sunday at 21:10 KST on tvN.

The series follows Gyeongseong's most skilled pickpocket, Lee Ga-kyung, who dreams of gathering enough funds to leave Joseon and then finally move abroad to start a new life. When she gets a dangerous yet lucrative opportunity to go undercover as an interpreter at the Japanese Government-General of Korea for 100 days to help the independence movement, she agrees. During the undercover operation, she meets Kim Tae-woong, an elite-level interpreter who returned from abroad after a decade. He is also the adopted son of Sato Shinichi. Their life gets entangled in secrets, conflicting loyalties, and a fight for independence.

100 Days of Deception stars Kim You-jung, Park Jin-young, and Jin Seon-kyu, to name a few. Here's more about it.

100 Days of Deception cast and characters

Kim You-jung as Lee Ga-kyung/Geum Seo-hee

Kim You-jung plays Lee Ga-kyung, a pickpocket and con artist in 100 Days of Deception. As Gyeongseong's most skilled pickpocket, she dreams of earning enough to move to America. She agrees to go undercover as an interpreter at the Japanese Government-General of Korea for 100 Days.

Some of the actor's notable projects include Lovers of the Red Sky, 20th Century Girl, and Dear X. Kim You-jung began her career as a model for a confectionery brand at the age of four. Soon, she became Korea's most in-demand child actress and was called 'the Nation's Little Sister' in South Korea.

Park Jin-young plays Kim Tae-woong/Sato Hideo

Park Jin-young plays Kim Tae-woong, the adopted son of Sato Shinichi, in 100 Days of Deception. Kim Tae-woong is the newly appointed interpreter for the Government-General of Korea. After spending more than 10 years abroad, he returned to Korea to take on the role of an interpreter. He is fluent in several languages, including English, Korean, and Japanese.

Some of Park Jin-young's projects include The Devil Judge, Our Unwritten Seoul, and Christmas Carol.

Lee Moo-saeng as Yoo Phillip

Lee Moo-saeng plays Yoo Phillip, a Korean-American correspondent working for an American media company. As a journalist, he uses his position to get tidbits on international affairs to put pressure on the Political chief of the Government-General. He is married to a sniper called Yoo So-ran.

Kim Hyun-joo as Yoo So-ran

Kim Hyun-joo (Glass Slippers, Twinkle Twinkle, and Watcher) plays Yoo So-ran, a sniper and Lee Moo-saeng's wife. She serves as a sniper for an anti-Japanese independence group called Gu-guk-dan. After spending more than a decade abroad, she returned to Korea under a new identity as a Chinese woman. She marries Yoo Phillip for convenience. It is Yoo So-ran who offered Ga-kyung the undercover deal after an assassination attempt on Sato.

Jin Seon-kyu plays Sato Shinichi

Jin Seon-kyu (The Outlaws and Extreme Job) appears as Sato Shinichi, the newly appointed Inspector-General of Korea. He is also the adoptive father of Sato Hideo. He is ambitious and the primary target for the Gu-guk-dan group.

Other pivotal cast and characters of 100 Days of Deception:

• Oiko Kiko plays Sato Hanako, Sato Shinichi's daughter, who has used a wheelchair since her birth. Sato Hanako becomes curious about her Korean mother, who died while giving birth.
• Seo Jeong-yeon as Ryu Gwan-sil, a Korean housekeeper who worked for the Sato family for years.
• Park Jun-yeon as Kim Myeong-nam, the daughter of Kim Seung-eok, the president of Joil Textiles.
• Lee Seon plays Lee Yeong-bok, the secretary at Joil Textiles and a member of the National Salvation Corps.
• Kim In-kwon plays Han Cheol-ryon, the leader of the National Salvation Corps.
• Choi Deok-moon plays Gwak Un-hak, a longtime National Salvation Corps member.
• Lee Do-gun as Jang Jeong-yeop, a National Salvation Corps member.
• Jeon Seok-chan plays Kim Chi-geon, a physician
• Go Se-bin as Hwang Gyu-yeon, a nurse
• Kim Joong-hee as Fukuda, director of the Police Bureau at the Government-General of Korea
• Kim Do-hyun as Suzuki, English interpreter
• Kouri Yuka as Yamada, Sato Shinichi's secretary
• Lee Ki-young as Kim Seung-eok, the president of Joil Textiles.
• Other cast members include Hong Sa-bin, Kim Ra-hee, Lee Seok, Choi Dae-hoon, Kam Woo-sung, Go Han-min, Kang Dong-young, Choi Ji-woo, and Kang Ha-eun.

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Also Read: 100 Days of Deception premiere finds a pickpocket caught up in an assassination plot - recap inside

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