Godwin's Crown

Godwin's Crown. The name of Park Jaehee's favorite historical romance novel. More accurately, it was her favorite until she transmigrated into the novel. Moreover, it's the body of the antagonist, Artemis Kratiste, who is exiled at the end of the story.
Good news: She didn't die.
Bad news: She can't go back to her world unless she sits on the throne.
What should she do? Live peacefully and get exiled from her country? or find a way to survive the endless schemes and conspiracies in acquiring the throne?