100 Days of Deception Episode 6

Ordered to win each other’s trust, Gakyeong and Hideo must hide what they feel. Another summons to Jongno Police Station puts those lessons to the test.

Spoiler warning: This post covers the main plot and final scene of 100 Days of Deception Episode 6.

There is one thing Gakyeong, for all her skill at lying, cannot bring herself to say.

In Episode 5, Lee Gakyeong (Lee Ga-kyeong) learned that the man being tortured at Jongno Police Station was Yoo Soran’s husband. In Episode 6, she uses her position as an interpreter to let him know Soran is safe, hiding the message inside a story about the household she serves. In front of the police, she must conceal her feelings and bury what she wants to say inside another conversation. But at the end, she cannot manage one simple lie: that she is all right.

100 Days of Deception Episode 6 Recap: A Message Hidden in Translation, a Name from the Past

Philip Explains Soran’s Past, and Gakyeong Envies Seohui

Philip Yoo keeps his gun pointed at Gakyeong as he tells her the story. The man she saw at Jongno Police Station is Soran’s husband. At Gyeam-ri, when Geum Seokjung (Geum Seok-jung) refused to betray his comrades, Sato killed their daughter in front of Yoo Soran (Yoo So-ran). Even if Gakyeong cannot understand their cause, Philip asks her to understand Soran. Wouldn’t anyone who lost a beloved daughter be driven to this? The drama’s Gyeam-ri evokes the real Jeam-ri massacre discussed in our Episode 5 analysis.

Gakyeong returns to Philip’s house, and her mind goes back to her own childhood. She grew up hearing that her mother was a tramp who dumped her daughter to sleep with a Japanese man. Even so, she believed her mother had simply found someone she loved more, that she had surely loved her too, and that Gakyeong was not a pitiful child, just a little unlucky. Now she tells Soran, "Seeing you, I envy Seohui. She has a mother who would risk her life for her."

The next morning, while cooking rice, Gakyeong asks when they can assassinate Sato, the Administrative Superintendent. Soran says one month. Gakyeong insists that once that month is over, they must send her to America, no matter what.

The Plan That Comes Before Her Husband

In solitary confinement, Seokjung hears from a fellow prisoner that the Gugukdan had a female sniper that day. At Philip’s house, Philip tends Soran’s wounded arm and says he will find a way to save Seokjung. Either Seokjung will be sentenced to death, or in his condition he will not last long in prison. Philip believes that if an American journalist takes an interest in Gyeam-ri and requests an interview, the police will have to be more careful with him. He also brings up the fact that Sato rose to his position through his wife’s family and even took their surname.

Soran cuts him off. Killing Sato is her task, and she is prepared to die afterward. But that is when Philip’s work begins. To expose Japan’s atrocities to the world, he must maintain good relations with the Government-General until then. If Seokjung is identified as a survivor of Gyeam-ri, Soran’s identity could be exposed too. He will not talk. The rest, she says, they must leave to heaven.

"But he is your husband," Philip says.

"No," Soran replies. "You are my husband."

Never Let Your Feelings Show

At Sato Hideo’s home, his younger sister Hanako wants to show him the capital letters she has written. Exhausted, he puts her off, then snaps at her. Fukuda’s slap from the previous day still weighs on him. When Sato enters his room, however, he praises him. Hideo did well to keep his face unchanged after being struck. In a childhood flashback, Sato gives him the same lesson: never let your true feelings show. That is how you become Japanese.

Sato’s concern is Gakyeong. Everything she sees, hears, and thinks will reach Philip Yoo, so Hideo must make her depend on him and trust him. She must trust Hideo, but he must not trust her. Korean women always betray you, Sato says. "Your mother did too. She promised me a lifetime, then left."

At the Government-General, Gakyeong remembers Soran’s instructions as well. Get Hideo on your side, but do not develop feelings for him. Don’t worry, Gakyeong had answered. That will never happen.

Hideo Changes the Translation

While Hideo meets Laurent, a foreign engineer, at Gyeongseong Station, Gakyeong searches his desk. One document catches her eye: "Pneumatic Tube System." It describes equipment that uses air pressure to send capsules carrying documents through pipes around a building. If the Government-General’s papers are going to travel through those tubes, a spy cannot afford to overlook them.

Later, Gakyeong overhears Laurent raising his voice at Sato. The Korean workers are too slow, he complains. They will never finish on time. Hideo, interpreting, gives Sato a different message: the men are falling ill from overwork, and proper rest is necessary if the project is to stay on schedule.

Told that they have been working fourteen hours a day without a day off for three months, Sato orders a one-hour reduction every other day. But the workers will be held responsible if they miss the deadline. Once Laurent leaves, Sato changes his order. Add an hour every day. Why should he make allowances for Koreans?

Meanwhile, the president of Joil Textiles visits Sato. He has contributed money to the construction project. Saying his one regret is that he could not contribute even a single brick when the Government-General building was built, he hands Sato a photograph of his daughter, Kim Myeongnam (Kim Myeong-nam).

His daughter, however, is at home hiding and caring for the wounded Lee Yeongbok (Lee Yeong-bok). On Yeongbok’s bandage, she has written: "Don’t die. No matter what."

News Hidden in a Story About Her Mistress

Fukuda summons Gakyeong to Jongno Police Station again. Seokjung has rejected every other interpreter and asked only for Geum Seohui (Geum Seo-hui). Hideo accompanies her. When he objects that they had agreed not to summon her again, Fukuda sneers. Did something happen between those two when he wasn’t looking? The prisoner insists on Seohui. Sato has also ordered Hideo, who understands Japanese, English, and Korean, to remain in the room.

Gakyeong interprets Fukuda’s questions. Asked his name, Seokjung replies, "Eat dog shit." In the next room, the wife of Na Byeongsun (Na Byeong-sun) is dragged in and cries out at the sight of her husband. Gakyeong offers to speak to Seokjung directly in Korean. Fukuda sneers that perhaps they should try some "physical communication."

Gakyeong speaks indirectly, leaving him to work out what she means. She is the live-in maid he saw when he came to the house disguised as a deliveryman. If someone had tried to harm her mistress, she would have stopped them. Her mistress even gave her the name Geum Seohui. Within this account of the household, she conveys that Soran is posing as a Chinese woman.

Seokjung asks what happened to the people who escaped from Dongsung-dong with gunshot wounds. Gakyeong answers that she hopes her mistress stays as healthy as she is now, for a very long time. Soran is safe.

Then an officer enters. Na Byeongsun has talked after they broke his wife’s leg. Furious, Seokjung shouts in Japanese. He never needed an interpreter. As Gakyeong turns to leave, he calls her back. Her mistress treats her that well? Then she should buy a castella cake on the way home. The officers rain blows on him as he speaks.

A Name Like Gaettong, and Words She Cannot Answer For

Walking out through a corridor that never falls silent, Gakyeong asks what will happen to him. At least ten years in prison, Hideo says. A death sentence is also possible. Then he asks whether Geum Seohui is really her name. Gakyeong claims her real name is Lee Gaettong and asks him to keep it a secret.

Hideo confronts her. How can she have an affair behind the back of a mistress who has been so good to her, then tell another man she likes him? Gakyeong asks whether he dislikes her seeing Philip. She will stop if he asks her to. Will he accept her feelings then?

Hideo says yes. They should go to Philip together and end it. Can’t she do that? Then how can she talk so lightly about leaving him? He cannot stand people who say they like someone without taking responsibility for the words. Gakyeong, who must protect her cover, cannot tell him what is really going on.

Ishikawa Nobuyuki

Sato visits Seokjung. Thirteen years have passed. Seokjung addresses him by his old name: Ishikawa Nobuyuki. The murderer who killed and burned his family, his friends, and the people of his village. Sato says he was carrying out a legitimate duty, suppressing a riot. He was acquitted at trial, too.

Seokjung says they were peacefully demanding independence when the Japanese locked them up, set them on fire, and shot them. Sato turns the blame on him. If Seokjung had not drawn those innocent villagers into the independence demonstrations, he could have lived happily with his family.

"Happily? In a stolen country?" Seokjung asks if Sato does not fear heaven, and says he will pay for his crimes.

A gunshot sounds from the next room. Sato mocks Na Byeongsun and his wife for being so devoted that they died at the same time. Then he tells Seokjung, "I’m not going to kill you. Your cause of death is illness."

Another shot rings out. Gakyeong and Hideo have not yet left the station. She breaks free of him and runs to the cell. Sato is walking away. Seokjung is dead. Fukuda approaches with a smile and thanks her for her interpreting work. The suspect has just died of sepsis from his infected gunshot wound, he says. Gakyeong clenches her fist. "I see. What a weak man he was."

In Sato’s office, Fukuda reports that Na Byeongsun and his wife have been recorded as suicides, and Geum Seokjung as a death from sepsis. Seohui saw him. If Philip finds out, could this cause trouble like Gyeam-ri? Sato asks what a man who died of sepsis has to do with Philip. Then he reflects on how uncommon the surname Geum is, and orders Seokjung’s personal records from thirteen years ago to be retrieved.

The One Lie Gakyeong Cannot Tell

On the way back from Jongno Police Station, Gakyeong refuses a car and walks alone. She cannot hold back her tears and nearly steps into the path of a bicycle. Hideo catches her from behind and feels her hand trembling. They take a rickshaw through the rain.

At that moment, a police officer in Suwon places Seokjung’s personal records into an envelope. Among them is a photograph of Soran.

Outside the house, Gakyeong cannot open the door. How is she supposed to tell Soran? She turns around and finds Hideo standing there. When he asks whether she is all right, she crosses her fingers as she does when she lies. But this time, she cannot say yes.

"No. I’m not all right."

Hideo takes her in his arms. Gakyeong cries and cries.

Why Did Sato Take His Wife’s Family Name?

Philip says Sato became Administrative Superintendent through his wife’s family connections and even changed his name to theirs. Ishikawa Nobuyuki, the name Seokjung calls him, is his original name. In Korea, spouses normally retain their surnames after marriage, so a husband taking his wife’s family name can seem unfamiliar. Japan has a tradition called mukoyoshi (婿養子): a son-in-law is legally adopted into his wife’s family, takes its surname, and may become its heir. It can bring him into the family’s wealth, business, and connections. This tradition provides useful context for Sato’s rise through his wife’s family.

In Episode 5, Sato was treated as an inferior outsider by elites from mainland Japan. His wife’s family offered him a ladder to the position he now holds. Behind that new name, Ishikawa Nobuyuki, the murderer of Gyeam-ri, receded from view. I read Sato’s new name as both a means of advancement and a way to erase his past. Seokjung is the man who calls him by the old one after thirteen years.

Hide Your True Feelings: The "Japaneseness" Sato Teaches

Sato praises Hideo for keeping his expression unchanged after being slapped. To be Japanese, he says, you must never let your true feelings show. Two Japanese terms offer a useful way to read this scene: honne (本音), one’s private feelings or real intentions, and tatemae (建前), the position or outward stance presented to others. Sato turns the demand to conceal his inner feelings into a condition his Korean adopted son must meet to be accepted as Japanese.

Hideo is not the only person hiding his feelings in this episode. Standing before Seokjung’s body, Gakyeong calls him weak. To get out of that room alive, she borrows the police’s language and puts on a public face. But her fist is clenched, and her hand is shaking.

That is why the final scene matters. In front of Hideo, who was raised to hide his feelings, Gakyeong cannot tell the lie. "I’m not all right." And Hideo holds her. Two people who have been instructed to use each other reveal something that, in this moment, calculation alone cannot explain.

Why Does Gakyeong Say Her Real Name Is "Dog Poop"?

When Hideo asks her real name, Gakyeong says Lee Gaettong. Gaettong means "dog poop." It is an evasive answer, but not an entirely unfamiliar kind of name to Korean ears. In the past, children were sometimes given deliberately humble childhood names. When early death was common, an unappealing name was thought to keep spirits from coveting the child. Names such as "Dog Poop" or "Pig" were meant to ward off misfortune. Even Gojong, who would become Korea’s king and later emperor, had the childhood name Gaettong.

Earlier that same day, Seokjung answered the police’s demand for his name by telling them to eat dog shit. For one person, the same word becomes a refusal to cooperate. For the other, it becomes a lie that protects her real name. And after hearing that name, Hideo asks the most serious question of their conversation: can she take responsibility for saying she likes him?

Why Does Seokjung Tell Her to Buy Castella?

Castella is a sponge cake that developed in Nagasaki, Japan, from confectionery traditions brought by the Portuguese. As he faces another beating, Seokjung leaves the live-in maid with one small instruction: buy a castella cake on the way home.

I read it as his last message to his wife. Gakyeong hid news of Soran inside a story about her mistress. Seokjung answers in the same way. Asking whether her mistress treats her that well suggests he has understood that Soran trusts this young woman. Telling her to buy a cake asks Gakyeong to carry home the care he cannot deliver himself.

That is also why Gakyeong cannot open the door. She has to tell Soran that her husband is dead, while carrying the last request he left for her. At the beginning of Episode 6, she envied a daughter whose mother would risk her life for her. By the end, she is the one who must tell that mother she has lost another member of her family.

Video: 100 Days of Deception — Character Teaser / Source: tvN DRAMA (YouTube)

Basic Info

Official English title: 100 Days of Deception
Formerly known as: 100 Days of Lies
Korean title: 100일의 거짓말 (Baegirui Geojinmal)
Genre: Period drama, espionage, romance
Setting: Gyeongseong (colonial-era Seoul), 1932
Premiere: October 10, 2026
Directors: Yoo In-shik, Kim Youn-jin
Writer: Ryu Bo-ri
Main cast: Kim You-jung (Lee Ga-kyeong), Park Jin-young (Sato Hideo), Kim Hyun-joo (Yoo So-ran), Lee Moo-saeng (Philip Yoo), Jin Seon-kyu (Sato Shinichi)
Episode covered: Episode 6
Where to watch: tvN and TVING in South Korea; Netflix in available regions. Availability varies by country.

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Tag: 100 Days of Deception Episode 6

100 Days of Deception Episode 6 Recap & Analysis: The One Lie Gakyeong Couldn’t Tell