Amber Barberi's Book
Girl from the Novel
My life was simple and happy until my cousin moved in with me. My parents gradually treated her with more affection than their own daughter, and my best friend admired and obeyed her. My boyfriend blushed whenever he looked at her, treating her like a goddess. All she needed to do was smile sweetly, and she could easily take everything away from me. Later, I learned that she is referred to in this world as— "The Female Lead."