He is Su Moyan, the Supreme Being of the Demon World, who is cursed by twins - the cold and heart-eating Demon Lord during the day, and the gentle and fragile A Yuan at night. Love and hate are both bone-cutting blades; she is the mortal medical girl Shen Yunyao, who was born with a clean body, and her blood can break the curse but she is burned. Every time she saves him, her heart must be cut out for blood, and she must bear the price of a sudden reduction in lifespan and the loss of memory.
When they first met, A Yuan's personality awakened in the warmth of her palm, thinking it was redemption; when the blood moon ended and the Demon King returned to his throne, he grabbed her by the neck and took her back to the Demon Palace: "Your life belongs to me from the day you saved me."
In the cage, he was going crazy between "love and hate" - one moment his eyes were red because of her coughing up blood, and the next moment he broke her wrist due to the backlash of the curse; she touched the magic mark on his heart and trembled, but was pushed into the darkness by him: "Don't touch A Yuan, he doesn't deserve to love you."
When the truth of the curse was revealed, she learned that the way to lift it was to sacrifice her heart's blood and a ray of her soul. When her heart was cut out for the fifth time, she smiled and cried: "Su Moyan, if there is an afterlife, don't let me meet you again." He hugged her cold body, and his two personalities were completely merged, but he lost forever the girl who would call him "Ayuan".
Three years later, in the blind medical clinic in the mortal world, she felt an inexplicable throbbing pain on her heart and her memory was empty; in the Wuwang Palace in the demon world, he held her blood-stained hairband and whispered to the empty palace: "Yunyao, I regret it."
This is a fate that begins with a curse and ends with a heart-breaking experience. He is her disaster, and she is his salvation, but in the end - love to the extreme is destruction, saving to the end is forgetfulness.
