1girl, d, animal_ears, ass, barefoot, beach, beach_chair, bikini, breasts, cleavage, day, feet, green_eyes, head_rest, horse_ears, horse_girl, horse_tail, kokoa_ninniku, legs, looking_at_viewer, lying, navel, on_side, open_mouth, orange_hair, orange_tail, outdoors, red_hair, silence_suzuka_(umamusume), small_breasts, smile, soles, solo, swimsuit, tail, thighs, umamusume