Rule 34 Dev - aimi_(sleepysushiroll) animal_humanoid anthro_on_anthro blue_body blue_skin clauschristmas2 duo erection female fin fish fish_humanoid genitals gills hair hand_on_leg hand_on_thigh hi_res holding_penis humanoid male male/female marine marine_humanoid penis red_hair tongue tongue_out undertale_(series) undyne|5980769680