anma21, kisaki (blue archive), kisaki (swimsuit) (blue archive), blue archive, absurdres, commentary request, highres, 1girl, bikini, black bikini, black hair, black robe, black umbrella, braid over shoulder, butterfly hair ornament, grey eyes, grey halo, hair ornament, halo, halterneck, long hair, looking at viewer, lying, multi-strapped bikini bottom, official alternate costume, official alternate hairstyle, oil-paper umbrella, on side, robe, robe partially removed, simple background, solo, strapless, strapless bikini, swimsuit, umbrella, white background