“100 Days of Deception” made an immediate impression on Korean television. The tvN spy-romance drama premiered October 10, 2026, with a 5.3% average nationwide rating—the strongest premiere rating of any tvN Saturday-Sunday drama so far in 2026, according to Soompi’s report citing Nielsen Korea. Episode 2 rose to 7.6% on October 11, placing the series first in its time slot among cable channels.
The early numbers are encouraging, but two episodes do not establish a long-term trend. The more interesting question is why this period romance, undercover mission and political thriller may be giving viewers a reason to return.
What the ratings actually show
Soompi reported a 5.3% nationwide average for the October 10 premiere. Nielsen Korea’s daily cable ranking lists the October 11 broadcast at 7.605%, which rounds to 7.6%. These are South Korean television ratings—not Netflix viewing figures in the United States or worldwide—and should not be described as global streaming rankings.
A spy story with a personal cost
Netflix describes the premise as Gyeongseong’s top pickpocket infiltrating the Japanese colonial government to steal secrets—only to fall for her target’s son. That setup combines a covert mission, divided loyalties and a romance in which trust can become a liability.
Kim You-jung plays Lee Ga-kyeong, a skilled pickpocket drawn into undercover work. Park Jin-young plays the interpreter connected to her mission, and Kim Hyun-joo is also among the principal cast. The central relationship has room to develop because the characters’ personal feelings can collide with the risks of their identities.
Why the historical setting matters
The drama is set in Japanese-occupied Gyeongseong, present-day Seoul, in the 1930s. The colonial power imbalance shapes the characters’ choices and makes information a form of leverage. For an undercover protagonist, a mistake can expose more than a romantic secret; it can put a mission and other people at risk.
The ratings do not prove historical accuracy, and the series is fiction rather than a documentary. Viewers interested in the period should use the drama as a starting point and consult reputable historical sources for context beyond the plot.
Can the drama sustain its momentum?
A premiere can benefit from curiosity and promotion; later episodes show whether viewers remain invested. The second episode’s 7.6% result is a positive sign, but it is too early to promise double-digit ratings or call the entire run a breakout hit. The next benchmark is whether the show can deepen its characters and sustain suspense after the initial mission and identities are established.
Park Jin-young’s reserved interpreter and Kim You-jung’s alert, street-smart heroine offer a useful contrast. The romance will feel more convincing if both characters make consequential choices, rather than relying only on misunderstandings.
Official preview and series information
The X post below is a tvN preview announcement cited in Soompi’s coverage. It is embedded as an original social post rather than copied and rehosted footage.
tvN 20주년 특별기획 <100일의 거짓말> 10/10 첫 방송
— tvN drama (@CJnDrama) October 6, 2026
Frequently asked questions
What rating did 100 Days of Deception receive for its premiere?
The first episode averaged 5.3% nationwide in South Korea, according to Soompi’s report citing Nielsen Korea.
Did episode 2 improve its ratings?
Yes. The October 11 episode recorded approximately 7.6% nationwide in Nielsen Korea’s cable ranking.
Was it the highest-rated tvN weekend drama premiere of 2026?
Soompi reported that its 5.3% premiere was the highest premiere rating of any tvN Saturday-Sunday drama in 2026 at that point.
Do these ratings represent Netflix viewers in the United States?
No. They are South Korean television ratings, not U.S. audience or Netflix streaming figures.
Where can viewers find official series information?
Visit Netflix’s official 100 Days of Deception page for the synopsis, cast and availability.
Sources
- Soompi: Premiere ratings report, October 11, 2026
- Soompi: Episode 2 ratings report, October 12, 2026
- Nielsen Korea: Daily cable ratings
- Netflix: Official series page
- Soompi: Preview coverage and tvN post
By Shivam Das
