1girl, animal_ears, armpits, baisi_shaonian, blue_eyes, breasts, detached_sleeves, grey_hair, hair_between_eyes, horse_ears, horse_girl, horse_tail, long_hair, looking_at_viewer, navel, open_mouth, outdoors, sky, small_breasts, solo, swimsuit, tail, umamusume, water_drop, wonder_acute_(umamusume)