tvN’s upcoming weekend drama 100 Days of Deception is generating significant buzz as it brings together two of South Korea’s most beloved actors. Kim You Jung and GOT7’s Park Jin Young star as the leads in this period spy romance set during the Japanese occupation of Korea. The drama recently unveiled its first stills and script reading footage, giving viewers a look at the 1932 Gyeongseong setting and the tense atmosphere that awaits.
The series marks a notable collaboration between the two actors, who play characters caught in a web of secrets, undercover missions, and forbidden attraction. With a premiere date set for October 10, 2026, at 9:10 p.m. KST, the drama will air on tvN and stream internationally on Netflix.
The Story Behind 100 Days of Deception
100 Days of Deception follows Lee Ga Gyeong, played by Kim You Jung, who is known as Gyeongseong’s (present-day Seoul) most skilled pickpocket. Her character dreams of leaving for America and saving enough money to start a new life. However, her plans take a dramatic turn when she receives an offer she cannot refuse: to infiltrate the Japanese Government-General of Korea disguised as an interpreter trainee.
Lee Ga Gyeong becomes a spy for the independence group Gugukdan, putting her life at risk every day. Her character transforms from a bold young woman with big dreams into someone who fights for her country’s freedom. The drama shows her journey over 100 days as she navigates the dangers of espionage while hiding her true identity.
Park Jin Young Takes on a Complex Role
Park Jin Young plays Kim Tae Woong, who is also known by his Japanese name Sato Hideo. He serves as the newly appointed interpreter at the Japanese Government-General of Korea and holds the position of adopted son to the Inspector-General of Korea, the second-highest-ranking official in the organization.
His character is described as an elite interpreter who speaks three languages fluently: English, Japanese, and Korean. On the outside, Kim Tae Woong appears polished and capable. But beneath that composed exterior, he carries deep wounds and secrets that he cannot reveal. The drama explores the internal conflict of a man who works for the colonial government while possibly harboring his own hidden agenda.
The Full Star-Studded Cast
The drama features an impressive ensemble cast of veteran actors alongside the leads. Kim Hyun Joo takes on the role of Yoo So Ran, a sniper for the anti-Japanese resistance group Gugukdan. Her character returns to her homeland after more than a decade, driven by dreams of Korea’s independence and personal revenge. She offers Lee Ga Gyeong a life-or-death deal while carrying out a mission to assassinate a high-ranking Japanese official.
Lee Moo Saeng plays Yoo Philip, a Gyeongseong correspondent for an American news agency. His character secretly works for Gugukdan while maintaining a fake marriage and hiding his feelings for Yoo So Ran.
Jin Sun Kyu portrays Sato Shinichi, the second-highest-ranking official at the Japanese Government-General of Korea. He becomes Gugukdan’s first assassination target and is described as an ambitious man with a cold gaze and stern manner.
The supporting cast includes Lee Ki Young, Seo Jeong Yeon, Kim Do Hyun, and many others who bring depth to the story.
Behind the Scenes: Director and Writer
The drama is directed by Yoo In Shik, known for his work on hit series like Extraordinary Attorney Woo and the Dr. Romantic franchise. His experience with character-driven storytelling and period pieces makes him a strong choice for this project.
The script comes from writer Ryu Bo Ri, who previously wrote Do You Like Brahms? . Her ability to craft emotional and nuanced relationships suggests that the romance in 100 Days of Deception will be just as compelling as the spy thriller elements.
The production team shared their thoughts on the project:
From our very first meeting, it was a meaningful time to reflect on the significance and message of the project. We hope the sincerity of all the actors and production staff will reach viewers in its entirety. The drama will tell the story of ordinary people who never lost the light of hope for independence amid the dark era of the Japanese colonial period.
First Script Reading: A Moment of Reflection
The cast and production team gathered for the first script reading, where they observed a moment of silence to honor the sacrifices of Korean independence activists. This gesture shows the seriousness with which the team approaches the historical context of the drama.
Kim You Jung fully immersed herself in her character during the reading, bringing to life the transformation of a pickpocket into a spy. Park Jin Young delivered a performance that captured the complexity of a man living with hidden sorrow while maintaining a polished exterior.
The script reading also featured Kim Hyun Joo, Lee Moo Saeng, Jin Sun Kyu, and other cast members who showed strong chemistry and commitment to their roles.
First Stills Reveal 1932 Gyeongseong
The recently released stills offer a glimpse into the world of 100 Days of Deception. One image shows Lee Ga Gyeong watching from behind police officers at a train platform, her curious eyes sparkling with interest. Another still captures Kim Tae Woong arriving at Gyeongseong Station amid tight security and a warm welcome.
Yoo So Ran is shown stepping onto her homeland for the first time in over a decade, her expression mixing calm sorrow with firm determination. Her reunion with Yoo Philip is also captured, hinting at their complicated relationship. Meanwhile, Sato Shinichi changes the atmosphere with just his presence, establishing him as a formidable antagonist.
The stills showcase the detailed period production design, from the costumes to the set decorations, transporting viewers back to 1930s Gyeongseong.
Streaming and Episode Details
100 Days of Deception will consist of 16 episodes, with each episode running approximately 70 minutes. The series will follow a weekend drama schedule, with new episodes releasing on Saturdays and Sundays. The finale is scheduled for November 29, 2026.
For international viewers, the drama will be available on Netflix worldwide starting October 10, 2026. This marks another major K-drama acquisition for the streaming platform, which has been expanding its Korean content library.
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What Makes This Drama Stand Out
100 Days of Deception combines several elements that K-drama fans love: a historical setting, high-stakes espionage, and a forbidden romance. The 100-day timeline adds urgency to the story, as Lee Ga Gyeong must complete her mission before her cover is blown.
The drama also explores themes of identity, loyalty, and sacrifice. Characters must navigate their personal desires against their duties to their country and the people they love. The Japanese colonial period setting provides a rich backdrop for stories of resistance and resilience.
The pairing of Kim You Jung and Park Jin Young is another major draw. Both actors have proven their versatility in previous projects, and fans are eager to see their on-screen chemistry. Kim You Jung is known for her roles in My Demon, Backstreet Rookie, and 20th Century Girl. Park Jin Young has appeared in Our Unwritten Seoul, When My Love Blooms, and Chicken Nugget.
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