The Flag-Breaking Crusher

When I was five years old, I recalled my past life while delirious with a high fever. I realized this world was inside a "serves you right" type isekai novel. In that novel, I was a villainous young lady who was exploited by my younger sister whose catchphrase was "unfair," and I was also destined to catch the eye of a neighboring country's prince at the end, becoming the righteous heroine who would get her comeuppance against my sister and the family who kept prioritizing her. How troublesome... Thinking that, I take action to break those flags, but...? [Daily 6/9][Weekly 6/9][Monthly 6/25][Quarterly 8/25] Ranked 1st in Comedy Rankings! Thank you so much!