Rule 34 Dev - 10s 1girl 2013 ass ass_focus bare_thighs black_shirt brown_hair casual cellphone computer early_teens female from_behind indoors laboratory leaning_forward misaka_mikoto non-web_source phone screencap shirt short_hair shorts solo standing teenage teenage_girl thighs to_aru_kagaku_no_railgun to_aru_majutsu_no_index|4314195699