"The Last Leaf" is a short story by O. Henry, first published in 1907. It tells the tale of two young artists, Johnsy and Sue, who live in a small apartment in Greenwich Village, New York. Johnsy is gravely ill with pneumonia, and as she lies in bed, she becomes convinced that she will die when the last leaf falls from the ivy plant outside her window.
Sue, who is caring for Johnsy, becomes worried about her friend's obsession with the leaf and tries to distract her with stories and other distractions. However, Johnsy remains fixated on the leaf, and as the days pass, it becomes clear that she is losing her will to live.
One day, as the last leaf is hanging precariously on the ivy, a old man named Behrman appears at the apartment. Behrman is a struggling artist who lives in the building, and he has come to visit Johnsy and Sue. When he sees the leaf, he is inspired to paint it, and he spends hours working on the small canvas.
As Behrman works, Johnsy's condition begins to improve, and she becomes more alert and engaged. When the painting is finished, Behrman brings it to Johnsy and shows it to her. Johnsy is delighted by the painting and asks Behrman to hang it on the wall next to her bed.
In the final scene of the story, Sue wakes up to find that the last leaf has fallen from the ivy plant. However, instead of being devastated, she is relieved to see that Johnsy is still alive and looking much better. It is revealed that Behrman, in a selfless act of love, painted a leaf on the wall next to Johnsy's bed, giving her the hope and strength she needed to fight her illness.
"The Last Leaf" is a poignant and touching story about the power of hope and the human capacity for selflessness and compassion. It highlights the deep bond between Johnsy and Sue, as well as the transformative power of art. O. Henry's writing is evocative and emotional, and he masterfully crafts a moving tale of friendship, love, and the human spirit.