Prompt: best quality, masterpiece, highres, male focus, 1boy, solo, bara, ass, muscular male, testicles, completely nude, thighs, back, ass focus, steam, anus, from behind, short hair, black hair, blue eyes, onsen, anal hair, looking at viewer, looking back, presenting, partially submerged, uncensored, wet, handsome, male
Negative prompt: EasyNegative, extra fingers, fewer fingers, pussy, female, breasts