1girl, ass, beret, blue_archive, blush, capelet, christmas, clothes_lift, from_behind, fur-trimmed_capelet, fur_trim, hair_bun, halo, hat, kirin_(mclovin9610), lifted_by_self, looking_at_viewer, looking_back, official_alternate_costume, open_mouth, panties, panties_under_pantyhose, pantyhose, pink_eyes, pink_hair, red_capelet, red_headwear, santa_costume, serina_(blue_archive), serina_(christmas)_(blue_archive), short_hair, simple_background, solo, thighs, underwear, white_background