Prompt: masterpiece, best quality, 2boys, yaoi, anal, sex, nipples, abs, muscular male, muscular, bara, penis, testicles, uncensored, erection, sex from behind, doggystyle, on bed, happy sex, short hair, black hair, brown eyes, multiple boys
Negative prompt: EasyNegative, extra fingers, fewer fingers, pussy, vaginal, hetero, breasts