kitasan black (umamusume), satono diamond (umamusume), umamusume, commentary request, highres, 2girls, ahoge, amenu 415, animal ears, black hair, blush, boots, bow, braid, breasts, brown eyes, brown hair, capelet, christmas, closed mouth, double-parted bangs, dress, fur-trimmed capelet, fur-trimmed dress, fur-trimmed headwear, fur trim, green bow, hair between eyes, hair ornament, half up braid, hat, holding, holding hands, holding sack, horse ears, horse girl, horse tail, large breasts, long hair, looking at viewer, merry christmas, multicolored hair, multiple girls, one eye closed, open mouth, peephole, pov peephole, red boots, red capelet, red dress, red eyes, red hat, red ribbon, ribbon, sack, santa costume, santa dress, santa hat, short hair, smile, snowing, streaked hair, tail, very long hair, white hair