anal anal_penetration anthro back bodily_fluids butt clothing cum cum_in_ass cum_inside duo first_person_view genital_fluids gloves handwear looking_back male male/male mobian penetrating_pov penetration scarf sonic_the_hedgehog_(series) winter winter_background styx343 knuckles_the_echidna sonic_the_hedgehog echidna eulipotyphlan hedgehog mammal monotreme hi_res