Rule 34 Dev - 2boys anal anal_sex ass_grab bath bathing blush bottomless detailed_background embrace functionally_nude gay gintama gintoki_sakata greyscale hands_on_ass hijikata_toshiro male male_only monochrome mozhi off_shoulder onsen outercourse outside partially_clothed partially_submerged snow steam sweat water wet wet_clothes wet_skin yaoi|7284250520