Prompt: masterpiece, best quality, high quality, realistic, a man is having his ass fucked by another man's penis, 2boys, muscular, full body, kneeling with legs spread, on all fours, nude, spread ass, testicles, penis, erection, anal, sex, sex from behind, multiple boys, erection, looking at viewer
Negative prompt: worst quality, low quality, anime, digital illustration, 3d rendering, comic panel, scanlation, multiple views, artist name, signature, error, text, cropped