The Cannon Fodder's Comeback: Sign-In Rewards and Feng Shui Make Everything Twice as Easy

I know I'm the real heiress.

Because I transmigrated into a book.

A book I read to the end because the fake heiress and I had the same name.

But according to the usual rules of transmigration, shouldn't I have become the fake heiress?

Why did I transmigrate into... the real heiress, a doomed Crown Princess who dies young?

I looked down at the vengeful ghost beneath my feet and fell into thought...