In her previous life, she was adopted by the Spirit King alone. The Spirit King's spirit queen died, leaving only a younger sister. She was plotted and killed in battle. The younger sister was willing to be sealed for her own sake in exchange for her reincarnation. In the next life hundreds of years later, fate allowed him to be born in the human world and return to the world of her previous life. In the end, she decided to take revenge for her own soul that died and was reincarnated a hundred years ago...