After a Bride Swap to Bring Good Fortune, the Short-Lived Heir Pretended to Be Sick

In her previous life, she took her younger sister's place and married a gravely ill heir. Her dowry was stolen, her life was taken, and she died in the Gu family's household.

Given another chance at life, she takes the dowry inventory her mother left behind and walks straight into the marquis's residence, the place everyone else avoids.