I haven't watched the last episode just yet, but man, this show really jumped the shark in the airport chess match arc and only got more stupid from there. It is a shame, too, because it had tons of potential.

This show might win biggest letdown of the season, just ahead of Tokyo ESP because this show fell from a much higher place.
During and after the airport arc, hardly anything the some of the characters did made any sense. The stupidity reached new heights in the ridiculous car chase scene.
At this point, I can only hope the last episode is even more ridiculous.