Mayfair was often frightened awake by her nightmares, but one day after school, she really encountered the scene in her dream, and was sent to the legendary elves in a heavy fog. Here she met and fell in love with the handsome elf prince. It seemed that the princess and the prince should live a good life. However, the prophecy that the human girl would kill the demon archmage, the invasion of the demons, the seizure of the demon king, and all the sudden changes pushed Mayfair ruthlessly into...