pixel art, boy and girl sitting side by side on a rooftop, clear empty space between them, distant city lights at night, cool blue sky, soft glow from buildings, relaxed but detached mood, no captions, no bottom bar, no overlay text, no decorative text elements, clean empty background, 16bit, lo-fi retro pixel, soft muted colour palette, subtle film grain, cinematic soft twilight light, melancholy quiet atmosphere