The Rebirth of a Concubine Turns the World Upside Down at the Beginning

A modern workplace woman dies suddenly and is reborn as a concubine who was tortured to death. She puts on the savage mask of a "little fairy" to protect herself, and uses modern thinking to reduce the dimensionality of ancient house fights, business wars, and power schemes. The purpose of making money is not to be picked on, to have money to investigate cases, to have money to protect one's own people, and finally to put down the pretense and live as one's true self.