100 Days Of Deception

“100 Days Of Deception” Character Posters: Kim You Jung, Park Jinyoung & Cast Reveal Secrets In Gyeongseong

A lie that lasted 100 days — until it stopped feeling like one. That's the emotional hook behind "100 Days of Deception," a new period spy-romance from the director of…

September 17, 2026
3 min read

A lie that lasted 100 days — until it stopped feeling like one. That’s the emotional hook behind “100 Days of Deception,” a new period spy-romance from the director of “Extraordinary Attorney Woo.” With fresh character posters out, Kim You Jung and GOT7’s Park Jinyoung are already stirring intrigue as two people caught on opposite sides of a dangerous game.

100 Days Of Deception: Overview

DetailInformation
GenrePeriod Spy Romance
SettingGyeongseong, Japanese occupation era
DirectorYoo In Shik
Lead CastKim You Jung, Park Jinyoung
Supporting CastKim Hyun Joo, Lee Moo Saeng, Jin Sun Kyu
PremiereOctober 10, 9:10 p.m. KST

A Web Of Secrets In Occupied Korea

Set over 100 tense days during Korea’s Japanese occupation, the drama follows Lee Ga Kyeong (Kim You Jung), Gyeongseong’s top pickpocket who becomes an undercover spy for the independence movement, infiltrating the Japanese Government-General of Korea. There, she gets entangled with interpreter Kim Tae Woong — publicly known as Sato Hideo (Park Jinyoung) — the adopted son of the Inspector-General of Korea.

100 Days Of Deception
100 Days Of Deception

The newly unveiled character posters show each figure with only half their face lit, hinting at the double lives they all lead.

Meet The Characters Behind The Masks

Lee Ga Kyeong (Kim You Jung) starts out indifferent to independence, chasing only her own dreams — until her mission forces unexpected feelings to the surface. Her tagline: “It was a lie that lasted 100 days. Until it became sincere.”

Sato Hideo / Kim Tae Woong (Park Jinyoung) is torn between two identities and two loyalties, his suspicion of Lee Ga Kyeong slowly turning into near certainty, even as he can’t stop wanting to believe her.

Yoo So Ran (Kim Hyun Joo) is a sniper for the independence group Gugukdan, the one who recruits Lee Ga Kyeong into the mission with an unwavering, determined gaze.

Yoo Philip (Lee Moo Saeng) is a Korean-American journalist secretly working with Gugukdan, using his press position to quietly pressure Japanese officials.

Sato Shinichi (Jin Sun Kyu) is the cold, calculating Director-General of Political Affairs, whose chilling confidence makes him a formidable obstacle for the independence movement.

As each character’s agenda intertwines, the tension around the Japanese Government-General of Korea only tightens.

Craving more upcoming K-drama previews and cast reveals? Head over to TechnoSports’ entertainment desk for daily updates.

FAQs

Q1. When does “100 Days of Deception” premiere?

The drama premieres on October 10 at 9:10 p.m. KST.

Q2. What is “100 Days of Deception” about?

It follows an undercover spy and an interpreter caught between loyalty and love during Korea’s Japanese occupation era.

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