I Want to Quit Being the Extra Sister of the Female Lead

"Actually, I love Lydia." The man who had been Eleanor's fiancé for two years confessed that he loved her younger sister. It wasn't surprising. Because Eleanor's younger sister, Lydia, is the female lead of this world. It's been 11 years since she possessed the extra older sister of the female lead. Male leads who pick fights all the time. Parents who only care about their younger sister. Three fiancés who broke off their engagements because they liked Lydia. Everyone in this world thinks and acts with Lydia at the center! After three broken engagements, her reputation as a noble lady has plummeted, Eleanor, tired of everything, quits being the extra older sister of the female lead...