miru, hiiragi kagami, hiiragi tsukasa, izumi konata, takara miyuki, lucky star, bad id, bad pixiv id, 00s, 4girls, ahoge, beach, bikini, blue eyes, blue hair, breasts, cloud, day, food, fruit, glasses, green eyes, hair ribbon, large breasts, mole, mole under eye, multiple girls, one-piece swimsuit, open mouth, outdoors, pink hair, purple eyes, purple hair, ribbon, school swimsuit, siblings, sideboob, sisters, standing, swimsuit, tareme, thighs, tsurime, twins, twintails, water, watermelon