Rule 34 Dev - 3boys aged_down anal anal_sex ass_grab back_muscles blush closed_eyes dual_persona erection from_behind frottage futon gay gintama gintoki_sakata hijikata_toshiro kimono looking_pleasured male male_only marrbl mmm_threesome monochrome muscular muscular_male on_bed open_clothes open_kimono open_mouth pleasure_face scars sweat threesome topless_male uncensored wrist_grab yaoi|7432610224