montsuko, serina (blue archive), blue archive, absurdres, commentary request, highres, 1girl, alternate costume, arm at side, bare shoulders, bikini, blush, bow, breasts, cleavage, clenched hand, closed mouth, collarbone, curvy, eyelashes, feather hair, furrowed brow, groin, hair between eyes, hair bow, hair ribbon, halo, hand up, kneeling, large breasts, light frown, looking at viewer, medium hair, navel, pink eyes, pink hair, red ribbon, ribbon, simple background, solo, stomach, straight hair, swimsuit, thighs, tsurime, white background, white bikini, white bow, yellow halo