1girl, animal_ears, blue_dress, breasts, brown_hair, clenched_hand, detached_sleeves, dress, frilled_dress, frilled_sleeves, frills, from_behind, horse_ears, horse_girl, horse_tail, large_breasts, long_hair, long_sleeves, looking_at_viewer, olecafe2, outdoors, ponytail, solo, tail, umamusume, very_long_hair, white_background, yamanin_zephyr_(umamusume), yellow_eyes