10mo, 1girl, bare_arms, bare_hips, bare_shoulders, black_one-piece_swimsuit, breasts, brown_eyes, brown_hair, collarbone, competition_swimsuit, contrapposto, cowboy_shot, flower, hair_between_eyes, hair_flower, hair_ornament, hairclip, hands_on_own_chest, highleg, highleg_swimsuit, medium_hair, misaka_mikoto, one-piece_swimsuit, small_breasts, solo, swimsuit, toaru_kagaku_no_railgun, toaru_majutsu_no_index, tokiwadai_school_swimsuit, two-tone_one-piece_swimsuit, two-tone_swimsuit