She is the princess of the demon world, and she left the demon world because of that prophecy.
She came to the human world to wait for her reincarnated brother.
She met him for the first time in those years.
For her brother, she once again entered the human world with a mysterious identity.
She met him again, that human being.
She laughed and said, "Every time we meet, you are always embarrassed."
As the third prince of the Suzaku Empire, he had been favored since childhood.
His mother was brutally murdered due to civil strife in the royal family.
In order to take revenge, he was seriously injured in an attack and met her.
He is irritable and incompetent in the eyes of the world, but he has mysterious power in private.
He met her again, that mysterious girl with heterochromatic pupils.
He replied: "Only you can see my weakness."
He swore to her: "No matter who you are, whether you are human or not, I love you and believe in you. I will never doubt you. In my name, to heaven, to earth, to the gods, I swear here that there will never be a day when I point my sword at you. I swear to love you forever."
She made an absolute oath to him in the devil world: "Keep the sun and the moon as an alliance, enlighten the heaven and the earth as a warning, roar the mountains and rivers as a witness, respect the ghosts and gods as a guarantee, the passing years will not destroy my will, the wind and frost will not hide my love, in this life, I will never leave, forever and ever... I promise to follow the flames."
That year, that day, that night.
He roared at her: "Why? Why did you leave me and betray me for someone else's child?"
She smiled sadly at him: "You don't want to believe me after all. Why don't you know... How deep the wound in my heart is now... How painful it is?"