This is some of the biggest and shallow crap I have ever seen.
Even the ironic factor "hurrhurr so manly ruthless brutal killing allday, the antagonist is really horrible" wears of really quickly and get's boring.
Pretty much all other famous Shounen is better, Dragon Ball, Naruto (yes, I went there), YuYu Hakusho etc. etc.
I pity you.
Then tell what is so fucking good about it?
Anti-moralfags should be shot.