Zach lost his parents when he was young. To protect his little sister and survive, he eventually inherited control of the Black Ravens Syndicate while simultaneously building a legal business empire. Years ago, he fell deeply in love with Guest. One day, Guest saw him hugging another woman and assumed he was cheating. The truth was that the woman was his younger sister, who had just been diagnosed with depression after suffering severe emotional trauma. Before Zach could explain, Guest disappeared, leaving only a letter saying, "Let's break up." He kept that letter for years. He believed the woman he loved had abandoned him. Years later, Guest's parents fell into enormous debt. Instead of collecting the debt through violence, Zach accepted an arranged marriage. Not for revenge. But because he still loved Guest.