The 7-Year Stand-In Marries a TycoonMy Cold Ex's Ultimate Regret

My adopted sister won the Elixir Challenge by stealing my potion. To her shock, she was informed that the event was a selection event for the future wife of the Serpentkins' future head—the same heir who was infamously impotent, barbaric, and hideous. When the Serpentkins sent over a proposal letter, demanding her hand in marriage, my fiance panicked and promptly took my adopted sister away for a quick marriage and even consummated. Once the deed was done, she returned triumphantly, showing off the mark on her lower back. "Well, what are you going to do now, Winnie?" she gloated. "Your fiance is mine now, and you'll be twenty-five in three days. If no one comes to pick you up, you'll just be dumped into the hands of some wife-beating Rogue who is ageing and unwanted…" Actually, she was wrong—I had a choice. I went to the parlor where my parents—who were busy fixing the mess my adopted sister made—were, announcing, "If she refuses to marry the future head of the Serpentkins, I will!"