okada maiko, minami chiaki, minami haruka, minami kana, comp h's, minami-ke, highres, 00s, 3girls, :<, ahoge, arm support, armpits, arms up, barefoot, bikini, black hair, blonde hair, blush, brown hair, closed eyes, cloud, day, feet, flat chest, frilled bikini, frills, front-tie top, happy, innertube, long hair, mountain, multiple girls, navel, open mouth, orange hair, outdoors, pink eyes, pointing, polka dot, polka dot bikini, polka dot swimsuit, pool, poolside, running, siblings, side-tie bikini bottom, sisters, sitting, sky, smile, soaking feet, swim ring, swimsuit, twintails, water, yellow eyes