He is the most deviant nobleman among the devils, stunningly beautiful, gentle and ruthless. He was feared by the world, but he showed true tenderness to that one person alone. "You are so good, how can I not love you?" He is the new head of the Torrance family. He has experienced so much darkness, but he is the light in that person's heart. He signed the contract willingly for him, just to protect him for the rest of his life and smile like the warm sun. "For you, I am willing to do anything." Yes, this is actually the story of the love between a gentle and loyal devil and his weak and tempting master.