The anime is great, I really like it... But from what I can see it's pretty loyal to the manga thus far...

If you want to watch it, you shouldn't be dissapointed...

But as story line goes, the manga should be enough, but as I said I really love the anime, at least season one... So you may want to watch it...

you can easily download season 1 from bots in #zhentarim @ irc.chatsociety.net