1girl animal_ears bare_shoulders blue_one-piece_swimsuit blue_sky blush breasts brown_eyes closed_mouth cloud cowboy_shot ear_covers hand_on_hip highres horse_ears horse_girl horse_tail medium_breasts nice_nature_(umamusume) ocean one-piece_swimsuit outdoors red_hair simoyuki sky solo squiggle swimsuit tail tracen_swimsuit twintails umamusume