1girl, o, alternate_costume, animal_ears, black_gloves, breasts, brown_hair, chiro_(chi-bu-ko), daiwa_scarlet_(umamusume), detached_collar, gloves, hair_intakes, halloween_costume, happy_halloween, horse_ears, horse_girl, jack-o'-lantern, large_breasts, long_hair, looking_at_viewer, red_eyes, solo, twintails, umamusume, upper_body, very_long_hair