Rule 34 Dev - 1boy 1male 1man ai_generated anus ass back backsack balls ballsack biceps big_balls big_cock big_dick big_penis big_testicles blush cock deltoids dick flaccid fumikage_tokoyami gay looking_at_viewer looking_back male male_only muscular muscular_male my_hero_academia nude_male nuts nutsack on_all_fours open_mouth penis scrotum showing_ass smile taint testicles toned_body toned_male trapezius twall97 uncircumcised uncut urethra yellow_beak yellow_eyes|13113047608