Do yourself a favor and don't watch it, unless you want to be completely confused and utterly disappointed. The show literally skips 90% of the manga and only briefly goes over the important scenes. I've read the manga hoping I could enjoy some scenes animated but boy was I wrong.
You won't even know wtf is going on unless you read the manga
Technically this is a 2 cour anime but after a mid break they took it really should be 1. They can't put decent animation into 12 episodes it's sad.
Only somewhat decent thing about this show is
Oh yeah there's literally no character development at all, you just get new characters thrown at you and as they die a few episodes later.
Just go read the manga.
Boycott this anime by not watching it. Hopefully they won't do another season so someone else can rework this show and do it right.
P.S Screw you Pierrot Studios