"Create an image with an aspect ratio of 9:16, depicting an urban alleyway in a photo-realistic manner, intended to be used as a background. The alleyway is detailed with brick walls, windows, pipes, and urban debris like trash cans, showcasing traces of city life. A dim yet significant light source illuminates parts of the scene. In the sky, a UFO appears, casting a distinct beam of light onto the urban alleyway, adding a mysterious and mystical ambiance and emphasizing immersion and realism to make viewers feel as though they could step right into the scene. Additionally, feature a Japanese boy prominently in the lower left of the frame, adopting a welcoming pose as if he's about to greet a dog. This pose includes open arms and a joyful anticipation on his face, introducing a dynamic human element that enriches the narrative depth and emotional impact of the image." --ar 9:16