The Villainess Works at the Royal Library

I was an ordinary librarian—until I found myself transmigrated into the novel as the minor villainess, Erika.
The only ending awaiting me? Execution by beheading for joining the rebel faction.
It’s bad enough that I have to keep working as a librarian even after ending up inside a romance novel, but there’s no way I’m going to lose my head—literally.
So, to survive, I became a librarian at the royal library…
“…The Reinhardt family repays its debts intensely and for a very long time. So I hope you’ll take your time and enjoy it.”
The male lead, Calix, keeps chasing me around, insisting on repaying his debt.
“If I had been born a man, I would have taken you as my partner.”
The female lead, Priscilla, confesses with gentle eyes.
“I’d like to make you my personal royal librarian.”
The crown prince—who was the sub male lead—shows up at the library every single day.
“Even your life and soul belong solely to me, my queen.”
Even the villain, Grand Duke Franz, becomes obsessed with me?
“As your guardian, nothing is more important than your happiness.”
The only one I can trust is the kind and gentle head librarian, William…
Will I ever be able to return to my original world?