kabocha, kabocha (monkey4), tatsuki yuuta, minagi mikoto, souseiseki, my-hime, rozen maiden, 00s, 2girls, :d, afloat, barefoot, beach, braid, competition swimsuit, day, flat chest, goggles, goggles on head, heterochromia, innertube, legs up, lens flare, looking at viewer, looking back, lying, multiple girls, on back, one-piece swimsuit, open mouth, outdoors, partially submerged, school swimsuit, smile, soaking feet, swim ring, swimsuit, wading, water