2girls, d, bare_shoulders, benghuai_xueyuan, beret, bow, christmas, christmas_ornaments, christmas_present, christmas_tree, crown, dress, full_moon, gift, gloves, grin, hair_bow, hair_ornament, hat, honkai_(series), houraiji_kyuushou, indoors, long_hair, looking_at_viewer, merry_christmas, moon, multicolored_bow, multiple_girls, night, night_sky, open_mouth, own_hands_together, purple_bow, purple_dress, purple_eyes, purple_gloves, purple_hair, purple_thighhighs, red_curtains, sirin, sky, smile, snowing, strapless, strapless_dress, teeth, thighhighs, wavy_hair, white_thighhighs, window, yellow_eyes