1girl ;d animal_ears blue_eyes breasts brown_hair choker cleavage full_body highres horse_ears horse_girl horse_tail jacket leg_up long_sleeves looking_at_viewer mejiro_ryan_(umamusume) midriff multicolored_hair official_art one_eye_closed purple_thighhighs red_shorts short_hair shorts simple_background smile solo starting_future_(umamusume) tail thigh_strap thighhighs transparent_background two-tone_hair umamusume white_hair white_jacket