tvN’s upcoming period spy romance 100 Days of Lies has released its first teaser, spotlighting Kim Yoo Jung, Park Jinyoung, and a high-profile creative team.
tvN’s upcoming weekend drama 100 Days of Lies is moving from casting buzz into full promotional mode, with its first teaser introducing a 1932 Gyeongseong-set spy romance built around Kim Yoo Jung, Park Jinyoung, Kim Hyun Joo, Lee Moo Saeng, and Jin Sun Kyu.
The teaser was released 100 days before the drama’s planned October premiere, a timing choice that mirrors the title and signals tvN’s intention to position the series as one of its major second-half releases. Korean outlets highlighted the scale of the early footage, the period setting, and the weight of the names attached to the project.
100 Days of Lies follows Lee Ga Kyung, a skilled pickpocket who disguises herself as an interpreter trainee inside the Japanese Government-General of Korea. There she crosses paths with Kim Tae Woong, the adopted son of the resident-general and a newly appointed interpreter with elite language skills. Their connection is framed as a dangerous romance shaped by espionage, false identities, and the independence movement.
The first teaser reportedly opens with a turbulent Gyeongseong Station, where Korean civilians and Japanese police move through the same space under surveillance. The imagery then expands to the Government-General building, setting up the institution as both a physical location and a symbol of power that the characters must navigate from within.
A High-Profile Cast In A Period Spy Romance
Kim Yoo Jung plays Lee Ga Kyung, the pickpocket who enters the colonial administration under a false identity. The role gives her a character who must balance survival instincts, undercover work, and the emotional stakes of a mission that reaches beyond personal ambition.
Park Jinyoung plays Kim Tae Woong, also known by the Japanese name Sato Hideo, a new interpreter linked to the ruling structure through adoption. Reports describe him as fluent in Korean, Japanese, and English, placing language itself at the center of the story’s power dynamics.
The supporting cast adds several forceful figures to the drama’s political and emotional map. Kim Hyun Joo plays Yoo So Ran, a veteran sniper for the anti-Japanese group Gugukdan; Lee Moo Saeng appears as Yoo Philip, a U.S.-based journalist and key member of the same organization; and Jin Sun Kyu plays Sato Shinichi, a senior official in the Government-General who becomes a central target.
That lineup is one reason the teaser has drawn attention. Jin Sun Kyu’s film success, Kim Hyun Joo’s long television presence, and Lee Moo Saeng’s recent run of major roles give the drama more than a two-lead romance structure. The story appears designed as an ensemble piece in which romance, resistance work, and political maneuvering collide.
Why Expectations Are Already High
The production team is another major factor. Director Yoo In Sik, known for the Dr. Romantic series and Extraordinary Attorney Woo, is directing the drama, while Ryu Bo Ri of Do You Like Brahms? is writing the script. That combination has fueled early expectations for a series that can balance genre suspense with character-driven emotion.
Korean coverage has also compared tvN’s ambitions for the drama with the network’s recent ratings history. TV Report pointed to the massive success of Queen of Tears, whose finale reached 24.9 percent in 2024, as part of the broader question around whether tvN can create another appointment-viewing weekend drama.
Those comparisons are premature, but they explain why the teaser is being read as more than a simple first look. The drama brings together a popular lead pairing, a large-scale historical backdrop, and a director associated with mainstream hits. If the writing can handle the sensitivity of its colonial-era setting, the series has the ingredients for a high-profile run.
For now, the confirmed details are straightforward: 100 Days of Lies has released its first teaser, the story is set in 1932 Gyeongseong, and the drama is scheduled to premiere on tvN in October. The next test will be whether later teasers can deepen the characters without reducing the historical backdrop to style alone.
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