1girl, o, animal_ears, aonu_koru, bad_pixiv_id, belt, blue_sky, breasts, brown_eyes, brown_hair, day, dress, green_dress, hair_between_eyes, hair_ornament, horse_ears, horse_girl, horse_tail, large_breasts, long_hair, looking_at_viewer, open_mouth, outdoors, satono_diamond_(umamusume), sky, solo, standing, tail, thighs, umamusume, very_long_hair