1girl, ahoge, arm_up, ass, back, bare_shoulders, belt, black_belt, black_survival, blue_eyes, blue_hair, breath, dark_blue_hair, gradient_background, holding, holding_sack, holding_snowball, long_sleeves, looking_at_viewer, looking_back, mametei, midriff, parted_lips, sack, santa_costume, short_hair, shoulder_blades, silvia_piquet, skirt, snowball, snowing, solo