masamuuu, shirai kuroko, toaru kagaku no railgun, toaru majutsu no index, untied, bad id, bad pixiv id, 1girl, barefoot, beach, bikini, blush, bow, breasts, brown eyes, brown hair, cloud, day, feet, female focus, flat chest, hair bow, hair ornament, leaning forward, legs, light rays, loli, long hair, looking at viewer, micro bikini, navel, ocean, outdoors, outside border, pink eyes, pink hair, pointing, sand, side-tie bikini bottom, sky, small breasts, smile, solo, standing, sunbeam, sunlight, swimsuit, teasing, thigh gap, toes, twintails, undressing, untying, water