Moon never planned to watch the man she loved marry someone else. But there she is-standing in the back of the hall, unseen, uninvited, and still unable to walk away from him. Min Yoongi was her mentor. Her safe place. Her almost. He taught her music, discipline, survival... but he never taught her how to live without him. She came only to say goodbye. To let go. To finally leave his world and disappear into her own. But everything shatters when the bride runs away- and Yoongi turns to Moon with a truth he should have never spoken. "You said a mentor must be repaid. So repay me... and marry me." This isn't a love story. This is a debt of the heart. This is the moment Moon learns that some repayments destroy you... and some awaken the parts of you tried to kill.

In a city where danger beats louder than love, fate stitches together two hearts from opposite worlds. He's a cold, ruthless mafia boss haunted by scars of his past - a man whose life runs on violence, power, and shadows. She's a bright, passionate fashion designer, living each day as if it's her last - battling a fragile heart disease while chasing her dream to bring beauty into a broken world. When their paths cross in a storm of blood, silk, and secrets, their worlds begin to unravel - one thread at a time. He vows to protect her heartbeat. She dares to design a future where his heart can finally heal. But in a world built on lies, will love be strong enough to survive the chaos - or will it stop with one final heartbeat? Genre: Romance · Drama · Mystery · Action Tone: Cinematic, Emotional, Intense, Slow-burn Love with High Stakes