My Fiancé Imprisoned Me The Fallen Princess Awakens for Revenge

This is a fantasy world where humans and dragons coexist. The royal family of the Kingdom of Dawn inherited sacred dragon blood, and Princess Aurelia unexpectedly saved Prince Silas of a neighboring kingdom. The two once made a vow in the Rose Garden, and Silas promised to protect her forever. However, in order to obtain the power of dragon blood, Silas became cold and ruthless. He betrayed love and their covenant, led an army to invade Aurelia's kingdom, slaughtered its people, personally killed Aurelia's father the King, and captured the capital. He imprisoned and tortured Aurelia, attempting to awaken the sacred bloodline within her for his own use. The former lover became her abuser, and the former vow turned into a cruel cage. When the seal weakens and an evil god awakens, Aurelia must choose between revenge and saving the world, and the greatest enemy she faces is the very person she once loved most.