hiiragi kagami, hiiragi tsukasa, izumi konata, lucky star, derivative work, highres, vector trace, 00s, 3girls, ahoge, alternate hairstyle, blue eyes, blue hair, braid, double bun, female focus, flat chest, hair bun, hair ribbon, innertube, long hair, mole, mole under eye, multiple girls, one-piece swimsuit, pointing, purple hair, ribbon, school swimsuit, siblings, sisters, swim ring, swimsuit, twins, water, wet