Of course we do! We once were the Holy Roman Empire (of the German Nation). Proud history all around us, except for all those things that were annihilated in the war
Holy Roman Empire. Neither Roman, an Empire, not particularly holy.......
You have to activate your aura for it to defend you. Getting caught off guard and stabbed in the fact with a sword will still kill you.
But, RWBY does have this thing where the Grimm are all evil and grr, and then the Hunters and Huntresses proceed to stomp the shit out of them all the time, and have a defensive Aura to protect themselves....
Yush! I want to find some Wormhole that'll get Shiro to drop into the Casino just as Mokuren finished, then have her act all shy maiden like while covered in blood and entrails of a dozen people.