I Became the Greatest Heiress of the Empire

'Estelle', a woman who suffered from a stigmatized disease.
One day, she realizes that she has possessed by an extra in a novel.
Kicked out of her home as a child for being switched with a maid's child, Estelle is saved by the Valois brothers and begins to fall in love with Claude, the male protagonist who is supposed to be connected to the protagonist, Seria…