100 Days of Deception First Look: Kim You Jung’s Undercover Spy Meets Park Jinyoung’s Suspicious Interpreter

tvN’s upcoming period spy romance “100 Days of Deception” has released a fresh batch of stills, and the simmering tension between its two leads is already unmistakable. Set against the backdrop of Korea’s independence movement, this drama pairs deception, disguise, and a slow-burn romance in a way that’s got fans genuinely intrigued ahead of its premiere.

100 Days of Deception: Drama Details

A Pickpocket Turned Spy, an Interpreter Hiding His Own Secrets

Kim You Jung plays Lee Ga Kyeong, once Gyeongseong’s top pickpocket, who takes on a far more dangerous role as an undercover agent for the independence movement. Her mission sends her straight into the Japanese Government-General of Korea under a false identity as an interpreter trainee. There, she crosses paths with Park Jinyoung’s character, Kim Tae Woong — an interpreter also known as Sato Hideo, and the adopted son of one of the administration’s highest-ranking officials.

New Stills Reveal Growing Suspicion

The newly released images capture Lee Ga Kyeong’s nerve-wracking first day undercover, visibly overwhelmed by the imposing atmosphere of the Government-General building. Her relief at successfully landing the cover position is short-lived, as she quickly finds herself face-to-face with Kim Tae Woong — a meeting that feels oddly familiar despite being framed as their first encounter.

Building on earlier teasers where Tae Woong had already grown suspicious of their repeated “coincidental” run-ins, the new stills show him regarding her with clear wariness even as she plays the part of an eager, curious trainee. One particularly telling still captures an uncomfortable silence between the two in the office, with Ga Kyeong stealing glances at Tae Woong while he stays fixed on his work — a small moment that hints at the tension quietly building beneath the surface.

Why the Cast Signed On

Kim You Jung has spoken about being deeply moved by the depth of the script and the historical weight of the story, saying the material stayed with her long after her first read. Park Jinyoung, meanwhile, described his character’s internal conflict between his two identities, Hideo and Tae Woong, as a key draw — teasing that audiences will watch him gradually transform after meeting Ga Kyeong.

Dramas set during this turbulent chapter of Korean history have long provided fertile ground for stories blending personal identity crises with high-stakes political intrigue, and this premise looks to lean fully into that tradition.

When to Watch

“100 Days of Deception” premieres on October 10, 2026, at 9:10 p.m. KST on tvN.

For more K-drama previews and casting updates, check out TechnoSports Entertainment.

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