montsuko, serina (blue archive), serina (christmas) (blue archive), blue archive, absurdres, commentary, highres, :d, arm at side, bell, beret, black bow, black gloves, black pantyhose, blush, boots, bow, capelet, christmas present, dress, feather hair, full body, fur-trimmed capelet, fur-trimmed dress, fur trim, gift, gift bag, gloves, hair bun, halo, hand up, handbell, hat, hat bow, holding, holding bell, lace-up boots, long sleeves, looking at viewer, m legs, medium hair, official alternate costume, official alternate hairstyle, open mouth, panties, panties under pantyhose, pantyhose, pink eyes, pink hair, red capelet, red dress, red hat, santa costume, santa dress, simple background, single side bun, sitting, smile, spread legs, tsurime, underwear, white background, white boots, wide sleeves, yellow halo