katahira masashi, shirai kuroko, toaru kagaku no railgun, toaru majutsu no index, 00s, 1girl, :3, armpits, barefoot, beach, bikini, black bikini, blush, bow, cloud, day, feet, female focus, flat chest, full body, hair bow, hand on own hip, hip focus, kneeling, light rays, long hair, micro bikini, navel, outdoors, panties, pink hair, red hair, side-tie bikini bottom, side-tie panties, sky, smile, solo, sunbeam, sunlight, swimsuit, thigh gap, thighs, twintails, underwear, water, yellow eyes