1girl ;d american_flag_bikini animal_ears bangs bare_arms bare_shoulders bikini black_ribbon blush breasts collarbone commentary_request ear_ribbon flag_print hair_between_eyes highres horse_ears horse_girl horse_tail long_hair looking_at_viewer mayano_top_gun_(umamusume) navel one_eye_closed open_mouth orange_eyes orange_hair ribbon simple_background small_breasts smile solo standing swimsuit tail two_side_up umamusume unname very_long_hair white_background