Gary: Zero -- 1-3
This series is a total mess. As someone else on MAL mentioned, everything wrong with anime is on show here, ranging from super-powered school girls with swords to elite special forces of youngsters (well, mostly) who happen to be the last line of defence the world has against evil. School girls need to be banned from any Japanese animation that isn't pornographic.
The first episode had a likeable (enough) cast of generic/copied characters, but it was all mindless (and physically impossible) monster killing until close to the end. The terrific ending saved the episode, leading viewers to believe the mostly average episode had been so average on purpose in order to hit them with a falcon punch at the end - it was the best ending to an opening episode I've seen. I was left eager to see more of the cast and the events that lead up to the finale of the first episode.
After the 'What the ****!?' ending, I had hoped the next episode would delve into the past of who I assumed to be the main character, going back to the very beginning of the events that lead up to his and his friends deaths. There had been more than enough flashbacks in the first episode to suggest that would be the case. But that wasn't what happened: episode 2 presented the viewers with an all new cast of generic characters, this cast being lead by a sword wielding school girl (very original). It ended up being even more inferior to the pre-ending sections of the first episode; it only offered completely uninteresting characters and poor to decent action sequences.
The third episode did manage to repair the damage a little by giving the series some back-story, with the relationship between the two sword wielding 'sisters' getting explained in detail, starting from the time they first met each other. It was a nice change of pace from the mindless action that had been shoved down my throat prior to the episode. But seeing a nice little story about how two female characters bonded (no, not like that - perv :/) and become close wasn't enough to make me forget most of the first episode and all of the second...and anyway, I know the boring action is likely to resume in episode 4.
I'm going to watch the 4th episode later. If it doesn't make me want to see what happens in the 5th then it's going to be the second winter anime dropped by me.