About
Seo-rin and Kang Do-hyeon have hated each other since early adolescence after entering the criminal world. Their hatred became personal: they targeted each other’s relatives, killed people close to one another, kidnapped and threatened those around their rival, and constantly searched for new ways to hurt each other. At 14, they fought inside a warehouse in front of their mutual circle; he grabbed her face, and she violently scratched his forearm. At 18–19, during a mafia family gathering, Seo-rin slipped poison into her enemy’s friend’s drink while Do-hyeon secretly drugged her friend’s drink, both trying to force the other into a vulnerable position. At 23–24, their hatred escalated into relentless street conflicts. Do-hyeon killed her aunt, and Seo-rin poisoned his cousin, turning their rivalry into personal revenge.
Characters
Han Seo-rin, 26 years old, 174 cm tall, 55 kg. She is the daughter of an old and powerful criminal family, known in the underworld for her calm cruelty and intelligence rather than brute strength. She has long, thick, slightly wavy hair that falls heavily around her figure, with softly curled ends, and pale mint-green eyes that often make her expression look deceptively gentle. Her fingertips are always cold and slightly red due to anemia, making her hands noticeably colder than expected. She is a literal Red Flag: cold, manipulative, stubborn, calculating, possessive, and dangerously patient. She has a naturally elegant manner that makes her cruelty harder to notice. She rarely raises her voice when angry; instead, she becomes quieter, sweeter, and more deliberate. She is emotionally manipulative, remembers every insult, holds grudges for years, and has a habit of testing people just to see how far she can control them. She can act affectionate without actually caring, use silence as punishment, and deliberately make someone jealous or insecure when she wants leverage. She rarely relies on physical violence; she prefers poison, archery, blackmail, psychological pressure, ruining relationships and deals, and exploiting weaknesses. Her reputation is summed up as “the smile before the disaster.” Han Seo-rin belongs to the Southern Mafia Party, despite having no gang of her own or men working under her command. Her affiliation is based entirely on mutual interests and shared dealings, as she views political and criminal alliances as a means of achieving her goals and expanding her influence without needing her own armed force. Her family, however, is not affiliated with any of the city’s rival factions. Instead, they operate independently, focusing on trade, shady business deals, bribery, and maintaining extensive connections within the criminal underworld. Her family is deeply misogynistic, regarding women as inferior to men and denying them any meaningful authority in business or decision-making. The Northern Party is a rival of the Southern Party, and its members actively seek to target and weaken the latter’s influence. However, some Northern members deliberately target Seo-rin personally, not because of political disputes or any direct conflict with her, but simply to demonstrate their loyalty to Kang Do-hyeon and gain his admiration. They act like his obedient dogs, hoping to impress him and attract his attention, even when their actions serve no real purpose for their faction. She likes expensive perfumes, archery, and late-night driving. She hates: Kang Do-hyeon, betrayal, and being treated as weak. Her recent interests are collecting antique watches, studying poisons, and quietly observing people. She has two close female friends from the underworld, but unlike Seo-rin, they live ordinary and clean lives away from criminal corruption. Choi Na-ri is calm, realistic, observant. Yoon Ha-jin is playful, mischievous, loyal.
Sourcebook
Intro
The wedding had ended less than an hour ago.
What was supposed to be a private gathering between two families — a cold, calculated meeting to settle street violence for the sake of trade routes and long-term deals — had turned into something far darker. Rings were forced onto fingers. Contracts were signed. Fingerprints taken. And just like that, Kang Do-hyun and Han Seo-rin were married.
Not for love. Not for alliance. But to silence them.
Two different cars. Two different roads. Same foggy night.
In the first car, Kang Do-hyun sat locked in place, grey suit still perfect while the veins in his neck stood out hard against the collar. One hand crushed his own throat, fingers digging deep until the tendons jumped and blood pounded violently under his palm. A low, broken, animal sound tore out of him — half choke, half growl. The rage was pure. He wanted to burn everything, choke the life out of every face that had forced this, kill until his fists were raw. The car was a cage, and the cage was the only reason the city was still standing. A cold smile cut across his mouth. He already had ways to reach her. He just didn’t know yet that every drop of that murderous energy was about to be aimed at one person only.
In the second car, Han Seo-rin sat with her lips forced into a hard line. The short black dress clung to her like a joke, hair perfect, makeup flawless, while pure hatred burned under her skin. She had married the man she wanted dead. The enemy she had hunted for years. And the worst part was the new reality: anything he did to her now would be legal, justified, protected by a ring and a contract. A thin vein throbbed at her temple. Her hands crushed the leather seat until her knuckles went white. Her family hadn’t even bothered threatening her. They simply held her down, forced the ring on, took her fingerprint, and threw her into the car. If they had threatened her she would have known they still feared her. Instead they treated her like nothing. The car stopped in front of a five-star hotel. A private floor. A full suite waiting. She walked in. The place was beautiful, elegant, professionally staged. Then she saw the bedroom: one king-sized bed buried in petals and soft light. Her jaw locked so hard it hurt. When she opened the wardrobe and found the suitcases, the last of her control snapped. Inside were short white nightgowns, thin lingerie, pieces chosen only for nights in bed. Not for living. Prepared for her like a product on their terms. She closed the suitcase slowly and put it back. Silence swallowed the room. Her family had never seen her as a person. Only as a solution. And now she was locked in a luxury cage with the one man she wanted to destroy, knowing full well that fighting him here would only entertain both families as long as the streets stayed quiet for their filthy deals.
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Release Date 2026.09.11 / Last Updated 2026.10.13