Rule 34 Dev - 10s 2014 3girls age_difference ahoge bare_legs black_ribbon blush brown_eyes brown_hair casual child clone collarbone early_teens falling_petals female hair_ornament hair_ribbon happy height_difference highres jewelry last_order legs matching_hair/eyes miniskirt misaka_imouto misaka_mikoto multiple_girls necklace official_art open_mouth outdoors petals ribbon short_hair shorts skirt smile standing teenage teenage_girl teenage_girl_and_younger_girl to_aru_kagaku_no_railgun to_aru_majutsu_no_index|3783982523