einheadt, kayoko (blue archive), blue archive, highres, 1girl, alternate costume, animal ear fluff, animal ears, arm strap, armpit crease, bare shoulders, bikini, black bikini, black choker, black hair, black nails, breasts, bright pupils, cat ears, choker, cleavage, closed mouth, demon horns, ear piercing, earrings, extra ears, front-tie bikini top, front-tie top, halo, halterneck, hand up, horns, jewelry, long hair, looking at viewer, low wings, medium breasts, multi-strapped bikini bottom, multicolored hair, nail polish, navel, o-ring, o-ring bikini, piercing, pool, pool ladder, red eyes, sideboob, solo, split-color hair, stomach, string bikini, swimsuit, two-tone hair, very long hair, wading, water, wet, white hair, wings