I'd like to start by saying I really, really enjoyed this anime. It was extremely exciting and the art is really top notch in my opinion. That being said, there are some plot holes.
I can believe the story for the most part, until Five steps in. First off, holy shit her English. It just made me want to punch a hole in the wall. Also the chessboard thing at the airport doesn't make sense. So for Nine to indicate his moves, he just runs around the airport. What if there were two pieces that could move to the same spot? How would Five know which piece he meant?
On top of that, after all the crazy things she does (blow up a plane, etc etc.), it takes until the last episode for her command to be relinquished? There's no way the US government would take that long.
Speaking of the US government, can you even snipe someone through a moving helicopter? And also, if Nine and Twelve wanted to live, they had ample chance to get away from the choppers.
Which leads me to the part where Twelve dies. So we know that Five and Nine both had deteriorating physical condition, but Twelve didn't. If Twelve wasn't shot, would he have been able to live a normal life? Also Lisa didn't seem that sad that Twelve died, even though I thought they were lovers...
Just some food for thought. If you've read this far and haven't watched it, why the hell did you read it when I wrote spoilers? All in all, loved it and would recommend.
