Charlotte doesn't want to play

Erin Loony always knew that she was meant to overcome her boring live as a borderknights daughter. After a riding accident, the memories of her past live flooded back, convincing her of the simple truth being reincarnated into a romance novel has to mean: Achieving greatness. Unfortunately, Erin lacks the competence to invent awesome things like airplanes or coffee machines, so she settles for the next best thing: Becoming friends with the heroine of the story and riding her coattails while enjoying watching getting the work done.

Her plan is set into motion during a ball where Charlotte, the Electors daughter, gets dumped by her fiance, crown prince Alexis. It's the most cliché event ever and everyone knows how those stories go: The unjust condemned lady comes back to punish those who did her wrong while rewarding those loyal to her. This is universal law, right? Right!