The Stand-In Heiress: Sisters Make Everything Easier

Su Muqing is a miracle-working physician afflicted with an unknown poison. She takes the place of the richest family's eldest daughter to search for clues and keep herself alive.

The real eldest daughter of the Su family: What? I have a substitute? Whatever. As long as the family gives me the money, I'm fine with it.

So Su Muqing takes on the original owner's reputation for being spoiled, destructive, and reckless, and struggles to survive amid everyone's glares. She turns her reputation around again and again and becomes the darling of the family.

After the real and fake heiresses team up, the Seventh Prince repeatedly wonders whether the woman he loves has a split personality.

No matter who she is, she's the only one for him in this life.