asahi (pamuko), asahi (pixiv280000), hatsune miku, kagamine rin, vocaloid, 2girls, aqua eyes, aqua hair, ball, barefoot, beach, beachball, bikini, blonde hair, day, hair ornament, hair ribbon, hairclip, innertube, long hair, multiple girls, navel, outdoors, polka dot, ribbon, shallow water, short hair, smile, standing, standing on one leg, striped bikini, striped clothes, swim ring, swimsuit, twintails, very long hair, wading, water