1girl, alternate_costume, animal_ears, black_tank_top, breasts, brown_hair, christmas_tree_costume, horse_ears, horse_girl, long_hair, looking_at_viewer, may9, midriff, multicolored_hair, navel, purple_eyes, signature, smile, solo, streaked_hair, symboli_rudolf_(christmas_emperor_tree)_(umamusume), symboli_rudolf_(umamusume), tank_top, towel, towel_around_neck, umamusume, upper_body, white_hair, white_towel