Don't watch it. It's dweeb shite, you'll develop serious brain damage due to the anime collapsing your neurons.
Anime kills people, I don't.
EDIT: Of course it has good reviews, it has anime titties, and since 99.99% of otakus/weebs are complete onanists, they'll always say it's good. Be smart Wendell. Or... don't, I can't tell you what to do after the war.