She is a female devil who is punished by everyone in the martial arts world. She fell off a cliff due to a serious injury. He is both a noble prince and a reclusive knight. They met at the bottom of the cliff, their identities changed, and they spent an ordinary time together. At that time, he was a doctor with skillful hands and a kind heart, and she was a weak and ordinary woman. Things are changing. Where will they go when their identities change again? Is that shared memory just an illusion?