1girl, blue_one-piece_swimsuit, blush, breasts, brown_eyes, brown_hair, collarbone, competition_school_swimsuit, covered_navel, cowboy_shot, groin, hair_ornament, hairclip, hands_up, head_tilt, holding, holding_towel, light_smile, maira_gen, medium_hair, misaka_mikoto, one-piece_swimsuit, parted_bangs, parted_lips, school_swimsuit, signature, skin_tight, small_breasts, solo, sunlight, swimsuit, thighs, toaru_kagaku_no_railgun, toaru_majutsu_no_index, tokiwadai_school_swimsuit, towel, two-tone_one-piece_swimsuit, two-tone_swimsuit, white_background