Rule 34 Dev - 3boys aged_down bathing bathroom black_hair blush completely_nude gintama gintoki_sakata indoors katsura_kotarou long_hair_male looking_at_another looking_at_penis male male_only nijiro_iro nude penis_awe purple_hair shampoo sitting suds takasugi_shinsuke towel washing washing_hair wet wet_skin white_hair|7746694624