She is a princess of a mysterious royal family with impure blood. She said her strength to live was only revenge. Anyone who has harmed the queen would be worse off than dead.
He is the only prince of the mysterious royal family. He knew that she was his biological sister, but he still couldn't help but get close to her again and again.
She thought that he could be her only support. She thought they had a life-and-death bond. It turned out that it was just what she thought.
After learning his identity, she...
When she learns his identity, he...
He is her enemy? Lover? Relatives?