Rule 34 Dev - 1girls bikini black_hair blue_bikini blue_eyes blush cowboy_shot female flower hair_flower hair_ornament hand_on_own_arm hand_on_own_hip head_tilt highres long_hair looking_at_viewer navel open_mouth saten_ruiko shou937 simple_background solo stomach string_bikini swimsuit teenage_girl teenager to_aru_kagaku_no_railgun to_aru_majutsu_no_index white_background young|12492202440