1girl, alternate_costume, animal_ears, belt, blush, breasts, cleavage, collarbone, cosplay, crop_top, detached_sleeves, english_text, greyscale, gryebooks, horns, horse_ears, horse_girl, horse_tail, long_hair, medium_breasts, mejiro_ardan_(umamusume), mejiro_palmer_(devil_in_the_moonlight)_(umamusume), mejiro_palmer_(umamusume), mejiro_palmer_(umamusume)_(cosplay), monochrome, open_mouth, poverty, shorts, solo, tail, trick_or_treat, umamusume