After Learning I'm the Fake Heiress, My Brother Starts Acting Strange

Any Novels with Fake and Real Heiresses, Childhood Sweethearts, and Secret Identities?

Looking for stories like *Secret Identity Revealed! My Brothers Are Stunned!*. I like stories with fake and real heiresses, childhood friends as the leads, a female lead who reveals her secret identity as a powerful figure, and a male lead with power and influence. Please recommend some! There are so few books like this on Tomato Novel, and I can't find any. I've already read all the ones I could find.