watanabe atsuko, kushinada nemuru, kuzumi mana, tsumuhana isuzu, megami magazine, ookamikakushi, absurdres, highres, non-web source, official art, 3girls, adjusting hair, afloat, barefoot, beach, bikini, black hair, blue eyes, blue hair, blush, bow, braid, brown eyes, brown hair, cloud, day, feet, flat chest, hair bow, hair ribbon, holding hands, innertube, long hair, lying, multiple girls, ocean, on back, one-piece swimsuit, outdoors, purple eyes, purple hair, ribbon, school swimsuit, skirt, sky, smile, swim ring, swimsuit, twin braids, very long hair, wading, water