tvN’s upcoming weekend drama 100 Days of Deception has released its first teaser, giving viewers a look at the dangerous undercover mission that brings together Kim You-jung and Park Jinyoung. The period spy romance is set in 1932 Gyeongseong (now Seoul) during the Japanese occupation of Korea. The teaser arrived exactly 100 days before the drama’s premiere on October 10, 2026.
The 24-second teaser shows quick cuts of intense scenes without any dialogue, set to high-tension music. It captures the busy streets of Gyeongseong and the imposing Japanese Government-General building, recreating the tense atmosphere of the era. The footage ends with the first meeting between the two lead characters, hinting at a story where trust is fragile and danger surrounds every moment.
A Pickpocket’s Dangerous Mission
The drama follows Lee Ga Gyeong (played by Kim You-jung), who is Gyeongseong’s most skilled pickpocket. Her only goal is to save enough money to escape to America. But her plans change when the Korean resistance group Gugukdan recruits her for a risky mission.
She goes undercover as an interpreter trainee inside the Japanese Government-General of Korea for 100 days. There, she meets Kim Tae Woong (played by Park Jinyoung), who also goes by his Japanese name Sato Hideo. He is the newly appointed interpreter for the Government-General and the adopted son of the Inspector-General of Korea, the second-highest ranking Japanese official in the country.
Kim Tae Woong speaks Korean, Japanese, and English fluently. He returns to Joseon after spending ten years abroad. While he appears to hold a privileged position, he carries his own secrets that add more layers to the story.
The drama explores the dangerous love story between these two characters, set against the backdrop of Korea’s fight for independence. The interpreter setting creates a unique tension, as the characters must navigate truth and lies while translating for both sides.
Star-Studded Cast and Characters
Kim You-jung, known for her roles in My Demon and Dear X, takes on the lead role of Lee Ga Gyeong. Her character starts as a pickpocket but becomes a spy working for the independence movement.
Park Jinyoung, a member of the K-pop group GOT7, plays Kim Tae Woong (Sato Hideo). His character is an elite interpreter who returns to Korea after a decade away to carry out an important mission.
The supporting cast includes:
- Kim Hyun Joo as Yoo So Ran, a sniper for the anti-Japanese resistance group Gugukdan who is driven by revenge
- Lee Moo Saeng as Yoo Philip, a Gyeongseong correspondent for an American news agency who quietly supports the independence movement
- Jin Sun Kyu as Sato Shinichi, the second-highest ranking official in the Japanese Government-General who poses a major threat to the resistance
The drama is directed by Yoo In Shik, who is known for hit series like Extraordinary Attorney Woo and the Dr. Romantic franchise. The script is written by Ryu Bo Ri, who wrote Do You Like Brahms?. This marks the first time the director and writer have worked together.
Global Streaming and Release Details
100 Days of Deception will premiere on October 10, 2026 on South Korean cable network tvN. The 16-episode series will air every Saturday and Sunday in tvN’s prime-time slot.
The drama will also be available for global audiences on Netflix starting the same day. International viewers in the United States, United Kingdom, Canada, Australia, India, and other countries can watch the series through the streaming platform.
The teaser was released on July 2, 2026, marking the D-100 countdown to the premiere. The release date was chosen to build anticipation among K-drama fans worldwide.
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Fan Reactions and Buzz
Fans have shown strong excitement for the pairing of Kim You-jung and Park Jinyoung. Many have shared their thoughts on social media after the teaser dropped.
โThis duo is absolutely crazy! Their acting is going to be amazing.โ
โTae Woong is really handsome. Can’t wait to see Jinyoung and Kim You Jung’s chemistry!โ
โCan’t wait to see Kim Yoojung and Jinyoung in one frame. Their visuals are going to be incredible!โ
โOMG! Finally Kim Yoojung and Jinyoung’s drama is ready to air!โ
The combination of the director’s strong track record and the lead actors’ popularity has raised expectations for the drama. The period setting, spy romance genre, and high production values shown in the teaser have also drawn attention from K-drama viewers.
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