Mind reading + historical fantasy with magic + nation-building + everyday gossip + supernatural tales.
After waking up, Mary finds herself transmigrated into a novel about a beloved heroine, as a doomed little princess who was switched at birth with a civet cat.
In the novel, the male lead takes her place as the prince, eating her food, sleeping in her bed, and mistreating her mother! Because she is a good-for-nothing baby who can barely speak, the Regent sends her to an insane asylum after her mother dies!
As she teeters on the brink of death, her mind-reading ability evolves again and again.
Not the heroine of the novel? Then she'll be the wicked villainess! This princess is done pretending. She'll gather a team of villains, take the throne, crush the scum, and get her revenge!