Rule 34 Dev - 1girl alternate_costume armpits arms_up ass_visible_through_thighs bikini blush bow brown_eyes brown_hair crossed_arms early_teens female frilled_swimsuit frills from_above hair_ornament hairpin highres kamiko_to_seiryoku loli looking_away lying matching_hair/eyes misaka_mikoto navel official_alternate_costume on_back polka_dot polka_dot_swimsuit solo stomach swimsuit tankini teenage teenage_girl thigh_gap thighs to_aru_kagaku_no_railgun to_aru_majutsu_no_index|232758304