1girl, animal_ears, bare_shoulders, breasts, brown_hair, christmas, christmas_ornaments, christmas_tree, daiwa_scarlet_(scarlet_nuit_etoile)_(umamusume), daiwa_scarlet_(umamusume), detached_sleeves, dress, from_side, fur-trimmed_dress, fur-trimmed_sleeves, fur_trim, hair_between_eyes, hair_intakes, horse_ears, horse_girl, horse_tail, large_breasts, looking_at_viewer, looking_to_the_side, lying, merry_christmas, on_stomach, parted_lips, plaid, plaid_dress, plaid_sleeves, red_dress, red_eyes, red_sleeves, solo, tail, tiara, umamusume, yunagi_amane