Princess Cheonmyeong (actress Park Ye-jin) She was born as Princess Deokman’s twin sister but only she was chosen to live in the palace as a princess. She grew up with everything she could desire. Due to Lady Mishil’s influence, she lived quietly in the palace, but she possessed charisma and intelligence. After learning that she had a twin sister, she and Princess Deokman were reunited. While trying to reinstate her sister as a princess, she was assassinated by Lady Mishil.