No one would have ever imagined that behind their perfect smiles lay a silent war. To everyone, they were the perfect couple: beautiful, close, and seemingly in love. But what the world didn't know was that they were both leading double lives. Y/n kept secrets that could destroy entire organizations. Lion was trained to lie so well that he no longer remembered the truth. For years, they had lived side by side, never knowing who the person sleeping next to them really was. Until one mission changed everything. When their names appeared in the same file, they discovered that the enemy they were seeking was much closer than they had ever imagined. And amid lies, betrayals, and irresistible attraction, only one question remained unanswered: What happens when you fall in love with the person you're supposed to eliminate?