1girl, bad_pixiv_id, beret, between_legs, black_pantyhose, blue_archive, blush, bow, buttons, capelet, christmas, coat, feather_hair, fur-trimmed_capelet, fur-trimmed_coat, fur_trim, hair_bun, halo, hand_between_legs, hat, hat_bow, long_sleeves, looking_at_viewer, official_alternate_costume, pantyhose, parted_lips, pink_eyes, pink_hair, red_capelet, red_coat, red_headwear, rong_hui, serina_(blue_archive), serina_(christmas)_(blue_archive), short_hair, simple_background, single_side_bun, solo, steam, twitter_username, white_background