Netflix has paired a new trailer with a station-set poster for 100 Days of Deception, sending Kim You-jung’s pickpocket-turned-spy and Park Jin-young’s colonial interpreter into the same crowded platform before the 100-day clock starts. The materials land as the series, already framed as one of the most highly-anticipated shows coming to the streaming platform next month, moves from stills and teasers into a fuller look at occupied 1932 Gyeongseong.
100 Days of Deception follows Lee Ga-kyung (Kim You-jung), Gyeongseong’s most gifted pickpocket, who accepts a 100-day assignment from independence fighters and infiltrates the Japanese Government-General of Korea disguised as interpreter trainee Geum Seo-hee. Inside those halls she collides with Kim Tae-woong (Park Jin-young), also known as Sato Hideo, a newly appointed elite interpreter and the adopted son of a powerful colonial official. The series is an espionage romance in which a young woman chasing a ticket to America is forced to decide what she is willing to steal, hide, and become while the independence group Gu-guk-dan pursues a deadly political target.
The new trailer traces Lee Ga-kyung’s transformation from the crowded alleys and station platforms where she once worked to the marble corridors of the Government-General, where a single slip can mean exposure. Charged glances between the two leads, a wallet stolen at Gyeongseong Station that is later remembered, and glimpses of Yoo So-ran (Kim Hyun-joo) and Sato Shin-ichi (Jin Seon-kyu) tighten the sense that every identity in the building is already under suspicion. The footage intercuts her street-smart past with the polished performance she must sustain as Geum Seo-hee, underscoring how quickly a temporary lie can swallow a life.
The new poster places Lee Ga-kyung in a rust-orange 1930s cape dress and veiled hat at a crowded Gyeongseong Station, suitcase in hand, while Kim Tae-woong stands just behind her in a dark suit and looks back across the platform.
Kim You-jung, returning to the small screen a year after Dear X, said she was instantly drawn to the project upon reading the script. The production presentation held Tuesday at CGV Yongsan IPark Mall in Seoul gave her a chance to explain how quickly the material took hold. She framed the choice as both professional and personal rather than a simple career move.
“I chose this drama because of the director, writer and cast. Reading the script made me feel that just being part of this project would be a privilege in my acting career, and I truly wanted to do it,” she said during a press conference for the drama at CGV Yongsan IPark Mall in Seoul, Tuesday. The remark reflected her confidence in Yoo In-shik and Ryu Bo-ri as much as in her co-stars. She treated the invitation itself as rare rather than routine.
She added that her character’s growth was a key driver. “Ga-kyung is in her early 20s — a vulnerable age when she hasn't even figured out what her dreams are. I was fascinated to see how a young person living through that era would evolve.” The actress described the role as a chance to track how someone who begins with only a private escape plan can be reshaped by the people and dangers around her. That inner shift, she suggested, is what made the part feel worth the risk.
Park Jin-young portrays Kim Tae-woong as a man split between the Japanese name Sato Hideo and the Korean identity he cannot fully discard after more than a decade abroad. Kim Hyun-joo plays Yoo So-ran, a resistance sniper who returns to Gyeongseong after years away with both a political mission and a personal score. Lee Moo-saeng appears as Yoo Philip, a Korean-American correspondent whose public work for a U.S. news agency conceals his support for the independence movement.
Jin Seon-kyu takes on Sato Shin-ichi, the high-ranking official whose presence inside the Government-General raises the cost of every secret the others are trying to keep. Together the five leads form a circle of overlapping lies in which no one can be certain whose loyalty will hold for the full 100 days. Their first encounters at the station and inside the colonial offices set the tone for a story that treats romance as another form of cover.
Director Yoo In-shik, whose credits include Extraordinary Attorney Woo and the Dr. Romantic series, shares directing duties with Kim Yoon-jin on the 16-episode project produced as part of tvN’s 20th-anniversary slate. Writer Ryu Bo-ri, previously known for Do You Like Brahms? and Trolley, built the script around a limited window of time that forces every character to act before their disguises collapse. The pair’s combination of precise period reconstruction and emotional pressure is meant to keep the series from settling into familiar historical-drama rhythms.
100 Days of Deception premieres on October 10 on tvN, airing Saturdays and Sundays at 21:10 KST, and will stream globally on Netflix beginning the same day. International audiences will be able to follow the weekly episodes as they air in South Korea rather than waiting for a later batch release.
Sources: tvN, Netflix Korea
