When she became an ordinary woman but was looking for lost memories, she met him.
When he was deeply in love with her, she was too weak to accept it.
When she finally plucked up the courage and thought that everything was going to be perfect, she had to marry into another country as his adopted sister.
When she escaped back to him after all the hardships, everything changed again.
You made a promise, but gave up.
When the world has changed and he meets her again, can everything really be started over again for a third time?