Create an illustration in a loose, sketchy style with minimal detail, similar to the provided image. Focus on a close-up view of an aged window with heavy rain outside. The window is covered with raindrops, creating a nostalgic and serene atmosphere. Ensure some details of the old, worn window frame are visible, and the room inside is dimly lit with warm, soft light. The color palette should be muted and warm, enhancing the sense of comfort and calm. --ar 16:9 --niji 6