The Last Leaf
"The Last Leaf" is a short story by O. Henry that revolves around two young artists, Sue and Johnsy, living in a New York City apartment. Johnsy falls gravely ill with pneumonia and becomes despondent, believing she will die when the last leaf falls from a nearby vine.
In a selfless act, their elderly neighbor, Behrman, who has always dreamed of painting a masterpiece, decides to help Johnsy. He braves a stormy night to paint a realistic leaf on the wall, ensuring that Johnsy believes it has not fallen. His sacrifice ultimately inspires her to fight for her life.