The King's Affection — Characters & Cast

To keep her loved ones safe, honor her brother's memory, and live a life where no one else dies because of her existence.

Starts as a terrified girl forced into a dead prince's identity who constructs a cold exterior to survive. She matures into a bold, compassionate leader confronting palace corruption, ultimately choosing personal authenticity over the throne.

To live according to his moral code and protect Dam-yi at all costs.

Initially a free-spirited physician avoiding government posts due to trauma from his father's violence. Upon becoming royal tutor, he finds purpose in protecting Lee Hwi, embraces his feelings regardless of taboos, and becomes her primary emotional anchor.

To ensure Lee Hwi's safety and happiness, even at the expense of his own desires.

Lee Hwi's gentle cousin who discovers her secret early on and silently protects her from behind the scenes. By the finale, his integrity and wisdom lead him to ascend the throne as the rightful King.

Protecting his family name and his son, which eventually conflicts with his loyalty to his corrupt master.

Ji-woon's father and Lord Sangheon's chief executor who originally carried out the order to hunt down the female twin. Witnessing his son's devotion and Lord Sangheon's cruelty, he experiences a moral awakening and sacrifices his life to help destroy Lord Sangheon.