She returned to her past with the memories of her previous life and changed her sister's tragic life. However, she escaped from love because of her failed marriage in her previous life.
When the face in the dream appeared in front of him, he just wanted to hold her hand and stay with her for the rest of his life. But when he was injured in an accident, he discovered that the scenes that often appeared in his dreams were proof that he loved her in his previous life but could only look at her silently.