She was four when they send her away . One misunderstanding. One signature. And her entire existence was cut clean from the family record. China became a holding cell. A hostel with hidden walls. That place swallowed children whole. Those who broke were buried. Those who survived... learned to kill. Yihun became one of the survivors. Raised by the underground syndicates of Europe, she sharpened into a weapon built of cold precision, selfish ambition, and a rage that never slept. She killed for money. She killed because it was the only language she was allowed to learn. Revenge became oxygen. So when they gave her the ultimate contract - assassinate the most powerful mafia lord in Asia - she said yes without hesitation. She didn't know she shared his blood. Kim Namjoon. Her brother. Twelve years lost between them. Just when the kill was in her scope... everything twisted. A deal with the police. A new mission. A new hell. She must infiltrate their world as a spy - living under the same roof as the family that abandoned her - appearing like a normal girl while carrying the scars of a trained predator. But in this empire, trust does not exist. And every smile hides a blade. This is a story about blood, betrayal and the kind of darkness that never lets you sleep. A BTS brothers mafia universe. Cover by user_thv.

Tian Xiwie's world stop the day her mother died her only family, her only home, gone without warning Her only way to survive? A top university scholarship-because without it, she can't even afford to breathe. With no money, no support, and nowhere to go, she is forced to claim her late mother Yunha's property in Korea - But there's a condition. According to her mother's will, she must be a Korean citizen to inherit it And despite turning eighteen, under Korean law, she is still considered underage As if things weren't already falling apart- Three strangers enter her life. Her guardians. Her family. Her half-brothers. The eldest, Hwang Hyunjin-a police officer. Cold. Emotionless. Ruthless. A man who doesn't believe in softness. The second, Yeonjun-a law intern. Calm, sharp, always watching... like he knows more than he says. And the youngest, Sunghoon, only twenty-one, studying psychology. Quiet, observant... but not as harmless as he seems. With no other choice, Xiwie moves in with them-just until she turns nineteen. But living with them isn't safe. It isn't warm. And it definitely isn't easy. Because this family... is hiding something. And soon, Xiwie realizes- her life didn't just change. It became something far more dangerous.