maira gen, lili hamilton, onodera mimori, yoshinaga futaba, yoshinaga-san'chi no gargoyle, 00s, 3girls, ball, barefoot, beach, beachball, bikini, blonde hair, blue eyes, braid, brown hair, child, day, flat chest, green eyes, hairband, innertube, multiple girls, name tag, one-piece swimsuit, one-piece tan, ponytail, purple eyes, purple hair, school swimsuit, single braid, swim ring, swimsuit, tan, tanline