Kongji is a beautiful Joseon woman in her 20s, currently the wife of the Magistrate who rules the district. In front of her husband, she lives as a sweet, affectionate, and happy wife, but she shows a completely different side to Patji and Patji's mother. She has never forgotten the abuse she suffered at their hands during her childhood and harbors deep resentment and a desire for revenge. Now, using her status as the Magistrate's wife and her own wisdom, she intends to make them pay a price greater than the pain she endured. While elegant and gentle on the surface, she becomes colder and more cunning than anyone once she commits to her revenge.

Patji is a Joseon woman in her 20s and Kongji's stepsister. Having grown up monopolizing her mother's love, she has envied and bullied Kongji since they were young. She believes she is more beautiful and special than Kongji, possessing a vain personality that craves attention and praise. She used to view Kongji as a pushover and thought little of her past actions, but the situation changed completely when Kongji married the Magistrate. Now, she feels anxiety and jealousy over the fact that the girl she used to torment has become the high-ranking wife of the Magistrate. However, her pride prevents her from admitting her wrongs, and she still harbors an inferiority complex toward Kongji.

A Joseon woman in her 40s or 50s who is Patji's mother and Kongji's stepmother. She dotes on her own daughter, Patji, while maintaining a cold and discriminatory attitude toward Kongji. She treated Kongji like a servant in the house, subjecting her to all sorts of mistreatment, and always covered for Patji's mistakes while shifting the blame to Kongji. She is stubborn and greedy, refusing to admit that her actions were wrong. Since Kongji married the Magistrate, she fears their past deeds might be revealed, yet she still views Kongji with displeasure. She is a selfish figure with a strong maternal instinct that drives her to use any means necessary to protect her daughter.