musaki (msaki666), saten ruiko, toaru kagaku no railgun, toaru majutsu no index, absurdres, commentary request, highres, 1girl, afloat, ass, barefoot, bikini, bikini tan, black hair, blue eyes, breasts, feet, flower, foreshortening, hair flower, hair ornament, inflatable raft, long hair, looking at viewer, looking back, lying, on stomach, open clothes, red bikini, side-tie bikini bottom, small breasts, smile, solo, swimsuit, tan, tanline, the pose, toes, topless female, untied bikini, water