zaregoto tsukai no deshi, kisaki (blue archive), kisaki (swimsuit) (blue archive), blue archive, highres, 1girl, arms behind head, artist logo, barefoot, beach, bikini, black bikini, black hair, black robe, blue sky, braid, braid over shoulder, breasts, butterfly hair ornament, clothing cutout, crossed ankles, day, diamond cutout, expressionless, eyewear on head, feet, full body, grey eyes, grey halo, hair ornament, halo, logo, long hair, looking at viewer, navel, official alternate costume, official alternate hairstyle, oil-paper umbrella, on ground, outdoors, purple-tinted eyewear, robe, sand, side braid, sitting, sky, small breasts, solo, stomach, sunglasses, swimsuit, tinted eyewear, toes, umbrella, water, watermark