"The Ruthless Vengeance: When Love and Revenge Collide" follows the brutal, heart-pounding journey of Kang Jae-Hyun, a former CIA operative forced into hiding after a mission the agency buried in blood. Hunted by the organization he once served, betrayed by the only family he knew, and haunted by a past he cannot escape, Jae-Hyun is a man shaped by shadows. Jung Hara, an ex-commando driven by the desire to avenge her murdered family, steps into his world like a storm. Fierce, brilliant, and relentless, she carries scars as deep as his. What begins as survival becomes a dangerous partnership. What begins as trust becomes something far more powerful—and far more fragile. As the CIA unleashes its deadliest agent, a man known only as Specter, their world erupts into a deadly game of deception, ambushes, and betrayal. Every truth uncovered leads to darker secrets. Every ally becomes a threat. And every heartbeat draws Hara and Jae-Hyun closer to a love born in violence but destined to change them both. From mafia corridors to rooftop battles, from shattered loyalties to burning revenge, this is a story of two broken souls fighting a war they never asked for—against enemies determined to destroy them and a past refusing to stay buried. When love and vengeance collide, only the ruthless survive.