100 Days of Deception

2026 South Korean television series October 2026 100 Days of Deception poster.jpeg Promotional poster 100일의 거짓말 100 Days of Lies Historical Spy Romance Action Ryu Bo-ri ko 류보리 Yoo In-shik Kim Yoon-jin Kim You-jung Park Jin-young Kim Hyun-joo Lee Moo-saeng Jin Seon-kyu Kim Tae-seong Choi Jung-in South Korea Korean Japanese English 2 70 minutes Studio Dragon Nangman Crew tvN 2026 10 10 present 100 Days of Deception (100일의 거짓말) is an ongoing South Korean television series written by Ryu Bo-ri ko 류보리 and directed by Yoo In-shik and Kim Yoon-jin, as a special project commemorating the 20th anniversary of tvN. The series stars Kim You-jung, Park Jin-young, Kim Hyun-joo, Lee Moo-saeng, and Jin Seon-kyu. Set in 1932 Gyeongseong (present-day Seoul) during the Japanese colonial period, it premiered on tvN on October 10, 2026, and airs every Saturday and Sunday at 21:10 (KST). It is also available for streaming on TVING in South Korea and Netflix globally. Synopsis Gyeongseong's most skilled pickpocket and con artist, Lee Ga-kyung, dreaming of earning enough to escape Joseon and start a new life abroad, agrees to go undercover as an interpreter at the Japanese Government-General of Korea for 100 days on behalf of the independence movement. There, she crosses paths with Kim Tae-woong, also known as Sato Hideo, an elite interpreter and the adopted son of Director-General Sato Shinichi. As the two become entangled in secrets and hidden loyalties within the colonial government, their lives intersect amid espionage, danger, and the growing struggle for Korean independence. Cast Main Kim You-jung as Lee Ga-kyung (이가경) / Geum Seo-hee (금서희)ko:[단독] 김유정, '100일의 거짓말' 주인공..'우영우' 감독과 호흡 [Exclusive] Kim You-jung confirmed as lead in '100 Days of Deception'; teams up with director of 'Extraordinary Attorney Woo' https://v.daum.net/v/20241011144841350 Daum JTBC ko Hwang So-young October 11, 2024 February 1, 2026 January 6, 2026 https://web.archive.org/web/20260106083432/https://v.daum.net/v/20241011144841350 live Gyeongseong's best pickpocket, she dreams of going to America. While saving money to achieve her goal, she accepts an offer from the anti-Japanese Korean independence movement Gugukdan (구국단) and becomes a spy, infiltrating the Government-General of Korea disguised as an interpreter for 100 days. Park Jin-young as Kim Tae-woong (김태웅) / Sato Hideoko:[단독] 갓세븐 박진영, '100일의 거짓말' 출연...김유정과 호흡 [Exclusive] Got7's Park Jin-young to appear on '100 Days of Deception' with Kim You-jung https://m.entertain.naver.com/home/article/009/0005532662 Naver MK ko Ji Seung-hoon July 29, 2025 July 29, 2025 July 29, 2025 https://web.archive.org/web/20250729031357/https://m.entertain.naver.com/home/article/009/0005532662 live The adopted son of Sato Shinichi and a newly appointed elite interpreter for the Government-General of Korea. Fluent in English, Japanese, and Korean, he returns to Korea after more than 10 years abroad and takes on an important role as an interpreter. Kim Hyun-joo as Yoo So-ran (유소란)ko:[단독] 김현주, 김유정 만날까..'우영우' 감독 신작 출연 물망 [Exclusive] Will Kim Hyun-joo and Kim You-jung meet? They're considered for roles in the new work by 'Extraordinary Attorney Woo' director https://m.entertain.naver.com/now/article/109/0005199244 Naver Osen ko Kim Na-yeon November 20, 2024 July 29, 2025 A sniper for the anti-Japanese independence group Gugukdan who takes up arms in pursuit of revenge. Previously involved with Sato Shinichi, she returns to Korea after more than a decade under a new identity as a Chinese woman and marries Korean-American journalist Yoo Phillip for convenience. During an assassination attempt on Sato, she presents Lee Ga-kyung with a dangerous, life-threatening deal. Lee Moo-saeng as Yoo Phillip (유필립)ko:김유정·박진영·김현주·진선규·이무생, '100일의 거짓말' 출연 확정 Kim You-jung, Park Jin-young, Kim Hyun-joo, Jin Seon-kyu, and Lee Moo-saeng confirmed to appear on '100 Days of Deception' https://m.joynews24.com/v/1939276 JoyNews24 ko Park Jin-young February 12, 2026 February 12, 2026 A Korean-American and correspondent for an American media company stationed in Gyeongseong. As a member of Gugukdan and a journalist, he uses his position and knowledge of international affairs to put pressure on the Political Chief of the Government-General, while maintaining a marriage of convenience with Yoo So-ran. Jin Seon-kyu as Sato Shinichiko:[단독] 'UDT' 대박난 진선규, '100일의 거짓말' 합류 [Exclusive] Jin Seon-kyu, who hit it big on 'UDT,' joins '100 Days of Deception' https://m.entertain.naver.com/home/article/311/0001948773 Naver Xports News ko Kim Ye-eun December 3, 2025 December 3, 2025 The newly appointed Inspector-General of Korea and adoptive father of Sato Hideo. An ambitious man willing to do anything for success and advancement, he becomes the primary target of Gugukdan. Supporting Sato household Seo Jeong-yeon as Ryu Gwan-sil (류관실) / Yanagiko:tvN 일낸다...시청률 27.6% 감독+1626만 배우 뭉친 韓 첩보물 ('100일의 거짓말') https://v.daum.net/v/20260827194836275 Daum Daum MHN스포츠 ko August 27, 2026 A Korean housekeeper who has worked for the Sato family for many years. She helps Tae-woong retain his Korean language and is one of the few people who remembers his mother. Oi Kiko as Sato Hanako Sato Shinichi's daughter and Tae-woong's younger half-sister. She has used a wheelchair since birth and is particularly close to Tae-woong. After returning to Gyeongseong, she becomes curious about her Korean mother, who died giving birth to her. Gugukdan Park Jung-yeon as Kim Myeong-nam (김명남)ko:[단독] 박정연, 김유정 주연 '100일의 거짓말' 출연...'차세대 주말퀸'을 향해 [Exclusive] Park Jung-yeon joins Kim You-jung-led 100 Days of Deception https://www.mt.co.kr/entertainment/2026/02/24/2026022409447218125 Money Today Korean Lee Kyung-ho February 24, 2026 February 25, 2026 The only daughter of Kim Seung-eok, the president of Joil Textile, and a prominent pro-Japanese collaborator. She secretly loves Lee Yeong-bok and becomes involved with the Gugukdan after following him. She secretly sells jewelry given to her by her father to help fund the organization. Lee Seon as Lee Yeong-bok (이영복) The secretary of Kim Seung-eok at Joil Textile and a member of the Gugukdan. Born into a family that had served the Kim family for generations, he became Seung-eok's secretary because of his intelligence. He secretly diverts company funds to support the independence movement and harbors feelings for Myeong-nam. Kim In-kwon as Han Cheol-ryong (한철룡)ko:"100일의 거짓말" 김유정·박진영 첫 만남부터 심상찮다...10월 10일 첫 방송 https://www.wikitree.co.kr/articles/1155359 위키트리 ko Lee Yu-mi August 27, 2026 August 27, 2026Per WP:KO/RS September 2026Per WP:KO/RS September 2026 One of the senior members of the Gugukdan. After being arrested and imprisoned during an earlier operation, he went to the organization's headquarters in Shanghai and has recently returned to Gyeongseong. He remains unmarried, claiming that he will not marry until Korea gains independence. Choi Deok-moon as Gwak Un-hak (곽운학) A longtime member of the National Salvation Corps and an associate of Han Cheol-ryong. He works as a traditional Korean medicine healthcare provider at Hanseong Korean Medicine Clinic in Jongno, where most of his patients are poor Koreans who cannot afford treatment. Lee Do-gun ko 이도군 as Jang Jeong-yeop (장정엽) A member of the National Salvation Corps who works as Gwak Un-hak's assistant at Hanseong Korean Medicine Clinic. Married with three children and expecting a fourth, he keeps his involvement in the independence movement secret from his family because he does not want to worry them. Jeon Seok-chan as Kim Chi-geon (김치건) A physician at the hospital affiliated with Keijō Imperial University. After witnessing students from Severance Medical College suffer for participating in the March 1 Movement, he becomes involved in the independence movement. Go Se-bin as Hwang Gyu-yeong (황규영) A nurse at the hospital affiliated with Keijo Imperial University. Inspired by nurse Park Ja-hye, who joined the independence movement after witnessing the March 1 Movement, she hopes to work in a hospital serving Koreans after independence. Government-General Kim Joong-hee as Fukuda The director of the Police Bureau of the Government-General of Korea. He previously served as a high-ranking police officer at the Jongno Police Station alongside Sato Shinichi, whom he met during his military service. After Sato returns to Gyeongseong, Fukuda pledges his loyalty to him. Kim Do-hyun as Suzuki An English interpreter for the Government-General of Korea and Tae-woong's superior. Trusted by Sato, he manages foreign affairs at a time when diplomacy is important. He speaks English, Japanese, and Korean. Kouri Yuka as Yamada Sato Shinichi's secretary. Originally from Tokyo, she obtains her position through her uncle, a senior official in the Government-General's Interior Affairs department. She is somewhat naive and clumsy, has a strong interest in fashion, and becomes shy around Tae-woong after falling for him at first sight. Gyodang-ri Hong Sa-bin ko 홍사빈 as Inoma (이노마) A rickshaw driver who lives with Ga-kyung in the shantytown and works with her as a pickpocket. He became an orphan after his parents died during the March 1 Movement. He is strong and fast but is illiterate and has no shame about it. Kim Ra-hee as Bang Kkot-nim (방꽃님) A resident of the Gyodang-ri shantytown who lives with Ga-kyung and Inoma. She lost her parents during an epidemic and became unable to walk. After Inoma took her in, she came to regard him as an older brother. Lee Seok as Ma Mun-mak (마문막) A thug who lives in the shantytown and controls its child pickpockets. He is frequently drunk and mistreats those who fail to meet their daily quotas. He resents Ga-kyung's contempt for him and looks for an opportunity to retaliate. Unknown as Lee Bak-chun (이박춘) A former farmer who was driven from his hometown after organizing a dispute against the exploitation of farmers by Japanese landowners. After wandering between places, he settled in Gyodang-ri, where he has lived for about ten years. He has a disability in one leg. Lee No-ah ko 이노아 as Im Geum-ok (임금옥) A resident of Gyodang-ri who lost her parents in the 1925 Great Flood of the Han River and became homeless with her younger sibling. Her sibling later left for a farm in Manchuria, and she waits for letters while making a living by weaving and selling straw mats. Yang Jo-ah ko 양조아 as Kim Jo-i (김조이) A mysterious woman whose origins are unknown. When she first appeared in Gyodang-ri, she was carrying a deceased infant, which the villagers buried. Since then, she has carried a handmade doll wrapped in cloth as though it were a baby. Family Lee Ki-young as Kim Seung-eok (김승억) The president of Joil Textile, one of the largest textile companies in Korea, and a prominent pro-Japanese collaborator. He is Kim Myeong-nam's father and is proud of her, despite losing her mother at a young age. He regrets not having a son and plans to find a suitable son-in-law to inherit his company. Others Choi Dae-hoon as pawn shop owner Kam Woo-sung as Geum Seok-joong (금석중)ko:김유정X박진영, 지독하게 얽히기 시작했다... "당신 진짜 정체가 뭡니까?" ('100일의 거짓말') https://mhnse.com/news/articleView.html?idxno=1588030 Mhnse ko October 11, 2026 October 11, 2026 Yoo So-ran's ex-husband. Go Han-min as Mitarai Jeon Yung-beop as Song Jeon (송전) Kim Dong-young as Park Se-hwan (박세환) Kang Ha-eun Choi Ji-woo Production Development The series is developed by Studio Dragon and produced by Studio Dragon and Nangman Crew. Yoo In-shik directs the series from a screenplay written by Ryu Bo-ri ko 류보리, marking their first collaboration. Yoo previously directed Dr. Romantic (2016–2023) and Extraordinary Attorney Woo (2022), while Ryu wrote Do You Like Brahms? (2020) and Trolley (2022).ko:김유정·박진영, '100일의 거짓말'로 경성 시대 첩보 로맨스 그린다...하반기 방영 Kim You-jung and Park Jin-young to lead Gyeongseong spy romance 100 Days of Deception, scheduled for the second half of the year https://www.mk.co.kr/news/hot-issues/11980663 StarDaily ko March 6, 2026 March 15, 2026 March 6, 2026 https://web.archive.org/web/20260306010622/https://www.mk.co.kr/news/hot-issues/11980663 live The first script reading took place on February 6, 2026. Casting In October 2024, Kim You-jung was reported to have been cast in the lead role. The following month, Kim Hyun-joo was reported have received an offer to join the series. In July 2025, Park Jin-young was reported to have been cast as the male lead, followed by Jin Seon-kyu in December. tvN officially confirmed the main cast, including Lee Moo-saeng, in February 2026. Filming Principal photography began in March 2026. Filming locations include Nonsan Sunshine Land in South Chungcheong Province, which was confirmed as a key filming location and main backdrop for the series and was previously used in the television series Mr. Sunshine.ko:논산시 선샤인랜드, 대작과 함께 'K-드라마' 성지로 재도약 Nonsan Sunshine Land rises again as a 'K-drama' landmark with a major production https://www.m-i.kr/news/articleView.html?idxno=1351707 Maeil Ilbo ko March 17, 2026 March 18, 2026 Release 100 Days of Deception premiered on tvN on October 10, 2026, airing every Saturday and Sunday at 21:10 (KST). It is also available for streaming on TVING in South Korea and Netflix globally.ko:'100일의 거짓말' 첫 티저 공개, 김유정·박진영 위험한 첩보 로맨스 : 네이트 연예 '100 Days of Deception' Kim Yoo-jung→Lee Moo-saeng, D-100 Teaser Revealed..Gyeongseong Vibe https://m.entertain.naver.com/home/article/112/0003800269 Naver Herald Pop ko Kim Ha-yul July 2, 2026 July 2, 2026 July 2, 2026 https://web.archive.org/web/20260702030617/https://m.entertain.naver.com/home/article/112/0003800269 live Marketing On July 2, with 100 days left until the drama's premiere, a special teaser was released, continuously highlighting the keyword "100" to captivate viewers.ko:'100일의 거짓말' 김유정→이무생, D-100 티저 공개..경성 바이브 https://www.heraldmuse.com/article/10795636 Herald Pop ko Kim Na-yul July 2, 2026 October 2, 2026 On August 11, 2026, tvN announced a special exhibition titled 100 Days of Deception Special Exhibition: 1932 Gyeongseong, Becoming a Spy at the Seoul Museum of History. The exhibition presents the setting and characters of the series. The first-floor lobby exhibition runs from August 14 to September 27, 2026, while a display in the museum's third-floor permanent exhibition area runs from August 14 to November 29.ko:드라마 '100일의 거짓말' 특별전 개최... 일정·장소는? Special exhibition for the drama '100 Days of Deception'... What are the dates and location? https://www.ggilbo.com/news/articleView.html?idxno=1175079 Geumgang Ilbo ko Park Su-jin August 11, 2026 August 16, 2026 On September 21, tvN launched an interactive promotional website for 100 Days of Deception, allowing users to explore content related to the series and its 1932 Gyeongseong setting.ko:100일의 거짓말 https://100days-of-deception.com/ tvN ko September 22, 2026 On September 22, tvN announced a special broadcast titled 100 Days of Deception: Secret Documents, scheduled to air on October 3, 2026, at 22:30 (KST), one week before the series premiere. The broadcast features the main cast introducing the series and their characters, with television personalities Tak Jae-hoon and Kim Jong-min serving as hosts.ko:김유정·박진영 '100일의 거짓말' 미리 만난다...10월 3일 스페셜 방송 Kim Yoo-jung and Park Jin-young's '100 Days of Deception' to be previewed... Special broadcast on October 3 https://www.mk.co.kr/news/broadcasting-service/12159072 StarToday ko September 22, 2026 September 22, 2026 Viewership According to Nielsen Korea, 100 Days of Deception premiered with a nationwide viewership rating of 5.3% and a metropolitan area viewership rating of 5.4% on October 10, 2026. It also recorded the highest premiere rating among tvN's Saturday–Sunday dramas aired in 2026.ko:'100일의 거짓말' 첫 방송, 동시간대 1위 https://www.bntnews.co.kr/article/view/bnt202610110013 bntnews ko bntnews October 10, 2026 October 11, 2026ko:'100일의 거짓말', 첫방 시청률 5.3%...2026 tvN 토일극 첫방 시청률 1위 [종합] https://m.entertain.naver.com/home/article/465/0000020237 Naver M ko October 11, 2026 100 Days of Deception Audience measurement performed nationwide by Nielsen Korea. y 400 250 South Korea - 1.260 1.844 + Average TV viewership ratings Ep. Episode Original broadcast date Average audience share(Nielsen Korea)Nationwide ratings: Ep. 1 https://www.nielsenkorea.co.kr/tv_terrestrial_day.asp?menu=Tit_1&sub_menu=3_1&area=00&begin_date=20261010 Nielsen Korea ko October 10, 2026 October 11, 2026 Ep. 2 https://www.nielsenkorea.co.kr/tv_terrestrial_day.asp?menu=Tit_1&sub_menu=3_1&area=00&begin_date=20261011 Nielsen Korea ko October 11, 2026 October 11, 2026 Nationwide Seoul 1 October 10, 2026 blue 5.278% (1st) blue 5.405% (1st) 2 October 11, 2026 red 7.605% (1st) red 8.289% (1st) 3 October 17, 2026 4 October 18, 2026 5 October 24, 2026 6 October 25, 2026 7 October 31, 2026 8 November 1, 2026 9 November 7, 2026 10 November 8, 2026 11 November 14, 2026 12 November 15, 2026 13 November 21, 2026 14 November 22, 2026 15 November 28, 2026 16 November 29, 2026 Average green — green — In the table above, the blue blue numbers represent the lowest ratings and the red red numbers represent the highest ratings. This drama airs on a cable channel/pay TV which normally has a relatively smaller audience compared to free-to-air TV/public broadcasters (KBS, SBS, MBC, and EBS). References External links ko Category:2020s romantic drama television series Category:2026 South Korean television series debuts Category:Korean-language television shows Category:South Korean romance television series Category:South Korean thriller television series Category:Television series about the Korean independence movement Category:Television series by Studio Dragon Category:Television series set in Joseon Category:Television series set in Korea under Japanese rule Category:Television series set in the 1900s Category:TvN (South Korean TV channel) television dramas