Thousands of years ago, he personally killed the person he cared about most for the sake of the world;
She knew clearly that he didn't believe that she wouldn't betray the world, but she still tried her best, just to make him say "I love you."
Thousands of years later, her soul is incomplete and her memory is gone.
He stayed with her for thousands of years, working hard to repair her broken soul. He hoped that she could regain her memory, but was afraid that she would no longer love him.
When the memory returns, what will happen to him and her? (A love story with the founder of the devil as the background)