Prompt: Generate a 16:9 A4 size image with a post-apocalyptic, dystopian, science fiction theme. The main focus of the image should be a boy wearing a mechsuit, standing with his back facing the viewer in the center of the canvas. The background should feature destroyed and desolate ruins, conveying a sense of the aftermath of some cataclysmic event. The overall aesthetic should embody a bleak and desolate feel, capturing the essence of post-apocalyptic sci-fi.