I Accidentally Revealed the Original Story to the Villain

I reincarnated into the world of a novel.
And not just any novel, but my favorite one, Square Illusion.
In this life, I was the daughter of a powerful duke, born with a golden spoon in my mouth.
The darling of my family, showered with love. That was me.
The problem? I was Sylvia Langston, fiancée to the crown prince, and the villainess of the story.
My fate was a brutal death.
Executed the moment I turn twenty, as a punishment for all the sins Sylvia had committed.
But how could I accept that? How could I give up this healthy body I’d been granted, the family I’d finally found?
Absolutely not!
“Then… just live a good life.”
That advice came from Ray, a background character never even mentioned in the book, and my nanny’s nephew.
From that moment, Sylvia’s fate veered off its rails.
“Ray, I don’t want to be Crown Princess. His Highness just isn’t my type.”
“Then who is your type? Black hair and red eyes, as you once mentioned? The title of that book was… Square Illusion, wasn’t it?”
“Y-you remember that? But I said it when we were really young!”
“I remember everything you like.”
Without realizing it, I spilled the secrets of the original story to Ray.
As for being the crown princess? The heroine could keep that role.
Once she appeared and tied up the original plot, I planned to set off with Ray, traveling the world, tasting and savoring life firsthand.
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“Are you insane? Do you even know where you’ve come?”
Three years later, I met my childhood friend again. But Ray was no longer ordinary.
“I’ll come back for you. Wait for me.”
The promise he’d made to me seemed thrown away like garbage. By his side now stood none other than the novel’s heroine herself.
Betrayal burned in my chest, tears stinging my eyes—but I held them back.
“Do you know who I am? Your insolence has no limits. To think you’d dare speak so rudely to the esteemed daughter of Duke Langston!”