animal_genitalia anthro armpit_hair armpit_showing armpit_sniffing balls big_balls black_nose bodily_fluids body_hair bottomless bottomless_male bottomwear bra brother brother_and_sister clothed clothing duo female fully_sheathed genitals gym gym_bottomwear gym_clothing gym_shorts incest_(lore) inside larger_male looking_at_viewer male male/female muscular muscular_male musk musk_clouds musky_armpit nipple_outline presenting presenting_balls saggy_balls sheath shorts sibling sister size_difference smaller_female smile sniffing sports_bra submissive submissive_female sweat sweaty sweaty_balls sweaty_body sweaty_genitalia tanktop tight_clothing underwear anotheranon canid canine canis mammal wolf absurd_res hi_res
">bro and sis finish a workout at the bottoms-optional gym"
">they've always been... close"