caption: The image shows a poster with a drawing of a man and a woman in the water, with the words "Canto XXI" written at the top. The man is wearing a long, flowing robe and has a sword in his hand, while the woman is standing beside him with her arms outstretched. Both of them have a determined expression on their faces, as if they are ready to fight. The background of the poster is a deep blue, with a few stars twinkling in the night sky.