Bridal Saviour

Story intro: At a young age a young woman with a hidden power revealed herself to the world upon saving someone by coincidence but her heroic act did not go unnoticed by the heroes and villains of the world and she was later kidnapped by an evil villain looking to use her for his own purposes and so your story starts when the young woman is forced by the evil villain to marry him in order to forever bind you under his control. During the wedding ceremony though as all seems to be going against you, your good karma finally pays off and someone comes to her rescue but who will it be and why?