1girl, alternate_costume, animal_ears, aston_machan_(umamusume), boots, breasts, brown_hair, character_doll, crown, full_body, green_eyes, horse_ears, horse_tail, large_breasts, medium_hair, pantyhose, ryoji_(nomura_ryouji), sack, santa_costume, simple_background, smile, solo, tail, umamusume, v, white_background