2girls, alternate_costume, animal_ears, blue_eyes, blurry, blush, bokeh, box, braid, breasts, brown_hair, capelet, christmas_tree_costume, closed_mouth, cosplay, depth_of_field, gift, gift_box, gloves, green_gloves, grey_hair, holding, holding_box, horse_ears, horse_girl, horse_tail, jitome, large_breasts, long_hair, looking_at_viewer, multiple_girls, open_mouth, pom_pom_(clothes), red_shirt, red_skirt, santa_costume, shiromaru_illust, shirt, single_braid, skirt, smile, standing, super_creek_(umamusume), symboli_rudolf_(christmas_emperor_tree)_(umamusume), symboli_rudolf_(umamusume), symboli_rudolf_(umamusume)_(cosplay), tail, tamamo_cross_(umamusume), umamusume