He and she, childhood sweethearts. They love each other. They were each other's first love. Later, he got into a car accident and lost all his memory, leaving her alone for the rest of his life.
He has had a crush on her since childhood, just to hold her hand until they grow old together. He was willing to give his all for her, but she didn't understand or understand his love. In the end, she finally woke up, but time did not allow it.