saten ruiko, toaru kagaku no railgun, toaru majutsu no index, artist request, highres, 1girl, ass, bikini, black hair, breasts, covered erect nipples, flower, green eyes, hair flower, hair ornament, hands on own hips, huge ass, legs, long hair, looking at viewer, looking back, medium breasts, multicolored hair, pool, purple hair, seductive smile, sideboob, slingshot swimsuit, smile, swimsuit, thighs, thong bikini, two-tone hair, water, wet