Screw the Plot, Rule the World

Evelyn Wyndham wakes up inside an ancient romance novel where the female lead suffers for love. The moment she arrives, she is pushed out to take a sword for another woman. The system tells her to endure mistreatment and win over the male leads. It says that her ultimate sacrifice will earn her their love. But Evelyn thinks their love is worth nothing! Instead of being timid, she becomes the feared princess who beats anyone who dares cross her to death.