A small girl and a combat robot walking in a post-apocalyptic ruined city

a small girl and a combat robot walking in a post-apocalyptic ruined city, they are holding hands and trust each other, detailed facial features, beautiful detailed eyes,beautiful detailed lips,extremely detailed eyes and face,long eyelashes, mechanical robot, rusty and weathered, post-apocalyptic environment, rubble, debris, crumbling buildings, overcast sky, muted color palette, (best quality,4k,8k,highres,masterpiece:1.2),ultra-detailed,(realistic,photorealistic,photo-realistic:1.37),cinematic lighting,dramatic shadows,concept art style