The heroine and the hero met as childhood sweethearts, but later the heroine's family had trouble and they left.
When the male protagonist grew up, they met and fell in love with each other. However, the male protagonist just played for fun, and later they broke up, and the two became the most familiar strangers. Later, the male protagonist died of terminal cancer. The female protagonist heard the news and rushed to the hospital. In the end, she did not see her last face, and the female protagonist was left alone for the rest of her life.
Purpose: Cherish everyone