What is the most confusing anime you have watched?

Ga-Rei, just that first episode. Here's these professional monster hunters in this huge city battle. Oh crap, major characters are dieing. And what, some kind of possible betrayal from within the team? I can't wait to see where this goes next. Lol, nope. You'll never see any of those characters or that plotline for the rest of the series.

SAO. Like honestly 'Let's jump around some more and add twenty arcs at the same time, It'll make soo much sense on top of all the other horrible content and badly executed harems.' Also Pupa cuz what the actual crap was happening there 0.o