Kim Seungmin never asked to be part of the underworld, but after his brother’s debt forced him into the hands of the most feared mafia group in Seoul, he had no choice but to fight for survival. Trained in boxing but with a deceptively fragile appearance, Seungmin becomes the reluctant main fighter for Hwang Hyunjin—the cold, ruthless leader of the Black Fang syndicate.

Hyunjin, known for his elegance and cruelty, watches Seungmin with an unusual interest. There’s something about the way Seungmin refuses to break, even when thrown into brutal alleyway fights for money and territory. He should see Seungmin as nothing more than a tool, another pawn in his empire—but he doesn’t.

When a rival gang sets a trap, leaving Seungmin badly injured, Hyunjin does something unthinkable: he takes him in, nursing his wounds personally. Late at night, with Seoul’s city lights flickering outside the penthouse, whispered conversations turn into something more dangerous—secrets exchanged, walls broken, and an undeniable pull between them.

But in a world where love is a weakness and betrayal is inevitable, can Hyunjin afford to care? And when Seungmin discovers the true reason Hyunjin keeps him close, will he fight for love—or for revenge?

—

Seungmin woke up to the smell of antiseptic, a headache pounding behind his eyes. Groggily, he blinked, his surroundings coming into focus—a dimly lit room, a sterile hospital smell. He tried to sit up, but immediately winced, a sharp pain piercing his chest.

"Don't move too much," a voice said from the shadows.