They were originally brothers and sisters, their father was originally a devil, and their mother was a god. They had been rejected by both worlds since they were born. They were abandoned to the mortal world, but in name only they experienced calamity and experience. The heroine time-traveled into her younger sister at this time.
In her first life, she was a noble princess, but she could only crawl beside the enemy prince and become a maid.
In her second life, she was the daughter of a wealthy family, but she was poisoned by her father and had to leave the family. However, he disguised himself as a beggar and came to the world to hide from the demons. He was adopted by her, but he developed feelings that he shouldn't have.
In the third life, he was a high-ranking emperor who gathered all the power in one body. He met her who was free and unrestrained, and the two got closer and closer.
The two only knew that the person in front of them in these three lives was the same person, but they never told each other their secrets. They only thought that the other person had been reincarnated repeatedly, until the two of them had their own thoughts and fought back to the two worlds, only to be told that they were brothers and sisters...