2girls, ;o, alternate_costume, animal_ears, bare_shoulders, belt, black_belt, blue_eyes, blush, bow, brown_hair, christmas, christmas_tree, closed_mouth, dress, ear_bow, elbow_gloves, fur-trimmed_dress, fur_trim, gloves, hair_down, hat, hokahoka_(hokahoka_oekaki), horse_ears, horse_girl, long_hair, looking_at_viewer, lying, mejiro_mcqueen_(umamusume), multicolored_hair, multiple_girls, on_stomach, one_eye_closed, open_mouth, pink_bow, purple_eyes, purple_hair, red_dress, red_gloves, santa_costume, santa_hat, sleeping, sleeveless, sleeveless_dress, streaked_hair, swept_bangs, tokai_teio_(umamusume), umamusume, window