I Love You as My Last Word

Childhood sweethearts met again in high school. The two gradually got to know each other and later fell in love. The year after graduating from high school, the heroine proposed breaking up and the hero did not get involved too much. Later, the two met in the hospital and learned that both of them had been diagnosed with cancer. They did not want to spend the rest of their lives in the hospital. They gave up treatment and went to see the vast world. Later, the hero passed away, but the heroine was found to have been misdiagnosed, but she would never see the person who loved her most.