As the Fake Heiress, I’ve Decided to Cling to the Real Heiress

A Friendly Relationship Between the Real and Fake Heiresses

I want a story about a real and fake heiress who get along well instead of fighting. The female lead is the real heiress, raised by the male lead since childhood, and both his family and her birth family treat her well.

The Real Heiress Comes Home as the Younger Sister, with No Favoritism: Her Sister and the Whole Family Dote on Her