hirayama madoka, kurusugawa ayaka, kurusugawa serika, megami magazine, speedo (company), to heart, to heart (series), highres, jpeg artifacts, non-web source, scan, third-party edit, 2girls, :d, arm up, arms behind back, beach, black one-piece swimsuit, blue eyes, blue hair, blue sky, blush, breasts, clothes writing, clothing cutout, cloud, cloudy sky, competition swimsuit, covered navel, cowboy shot, day, from side, hand on headwear, hat, large breasts, long hair, looking at viewer, looking back, multiple girls, ocean, one-piece swimsuit, open mouth, outdoors, parted bangs, print swimsuit, profile, siblings, side cutout, sidelocks, sisters, sky, smile, sparkle, standing, straw hat, sun, swimsuit, twins, water