Rule 34 Dev - 1girl animal_ears armband blunt_bangs boots bow feet_out_of_frame gloves gold_ship_(umamusume) greyscale hara_tetsuo_(style) headwear_request hiyoko_(chick's_theater) hokuto_no_ken horse horse_ears horse_girl horseback_riding knee_boots kokuoh_(hokuto_no_ken) long_hair monochrome muscular riding umamusume white_gloves|13563098757