1girl, alternate costume, ass, back, backless dress, backless outfit, bare shoulders, belt, black feathers, black hair, blue archive, blush, bow, christmas, dress, elbow gloves, feathered wings, feathers, from behind, fur-trimmed dress, fur-trimmed gloves, fur choker, fur trim, gloves, halo, hand on own ass, hat, looking at viewer, mashiro (blue archive), no panties, patanda, purple eyes, red bow, red dress, red headwear, santa dress, santa hat, short dress, short hair, shoulder blades, skindentation, solo, sweat, wings