1girl, afterimage, animal_ears, brooch, christmas, closed_eyes, colored_text, comic, dress, ear_wiggle, gift, greyscale, half-closed_eyes, haru_urara_(umamusume), hat, horse_ears, horse_girl, indoors, jewelry, kakuteru_sudachi, king_halo_(umamusume), long_hair, looking_at_another, looking_back, lying, monochrome, motion_lines, off-shoulder_dress, off_shoulder, on_bed, on_side, open_mouth, original, santa_dress, santa_hat, short_sleeves, sleeping, sleepy, smile, solo, standing, sweat, umamusume, under_covers