nikku nana, kotori (blue archive), blue archive, 1girl, ahoge, animal ears, arm behind back, arm behind head, armpits, beach, bikini, blonde hair, blush, braid, breasts, cleavage, crown braid, floppy ears, hair tie, halo, low twintails, medium breasts, navel, open mouth, outdoors, palm tree, plump, red eyes, sand castle, sand sculpture, short hair, short twintails, side-tie bikini bottom, sitting, sky, smile, solo, starfish, sweat, swimsuit, tree, twintails, wariza, yellow bikini