Rule 34 Dev - 1boy aggressive_retsuko anthro blush bodily_fluids bulge chang52084 clothed clothing erection erection_under_clothes erection_under_clothing haida hyaenid luwei_(artist) male male_only mammal muscular muscular_anthro muscular_male red_underwear sanrio sitting smooth_fur solo sweat sweatdrop topless underwear|4528265272