Not my brother's best friend

He’s ruthless, calculating, and driven by vengeance. She’s warmth, light, and everything he never dared to want.
For years, his only focus has been revenge—love was never in the equation. But when he's tasked with protecting his best friend’s little sister, the walls he’s built begin to crumble.
She finds good in everyone, even the man who warns her to stay away. He’s cold, possessive, and dangerously addictive. Yet, despite every warning, she falls for the one person who could break her beyond repair.
Because when love and obsession collide, the fallout is anything but predictable.