retsu (retsu 3), kikyou (blue archive), kikyou (swimsuit) (blue archive), blue archive, commentary, highres, 1girl, animal ear fluff, animal ears, armpit crease, armpits, beach, bikini, black hair, blue bikini, blush, breasts, brown eyes, cat ears, cat girl, cleavage, cloud, cloudy sky, collarbone, flower, horizon, lying, lying on person, medium breasts, multi-strapped bikini bottom, multi-strapped bikini top, multiple tails, ocean, official alternate costume, on stomach, outdoors, short hair, side-tie bikini bottom, sky, smile, solo focus, swept bangs, swimsuit, tail, tail wrap, umbrella, white flower