1girl, alternate_costume, animal_ears, ass, black_pants, blue_eyes, blue_hoodie, breasts, brown_hair, cowboy_shot, from_behind, grass_wonder_(umamusume), hood, hood_down, hoodie, horse_ears, horse_girl, horse_tail, long_hair, long_sleeves, otimusyairoha, pants, simple_background, small_breasts, solo, standing, sweatpants, tail, tail_through_clothes, umamusume, yellow_background