Board Thread:General Discussion/@comment-24155619-20140711014702/@comment-24994749-20140713080948

I always thought of Aura in similar terms to "Reiatsu" in Bleach. It's like an energy reserve.

In Bleach, shinigamis with greater reiatsu can survive mayor amounts of damage that shinigamis with lower one and are also physically stronger. That said, the more a shinigami uses powers (kido [spells], zanjutsu [sword], hakuda [hand to hand], shunpo [hyper speed]) the less reiatsu they have left for other things. Jaune's case kind of reminds to Ichigo (the protagonist from Bleach).

Ichigo literally spends the first 2 sagas surviving in base to his ability to let out a massive amount of reiatsu all of a sudden to hold him standing after taking massive amounts of damage and then throw it in one final giant blow.

Weiss might have trained herself so all of her aura is on the offensive, those sacrificing defense and healing. Like, per defect, the body will use the enrgy to shield and heal because it wants to live; but one can change the per default setting. Ren, on the other hand, might have made the per default setting for it to be completely concious, hence why he was shown doing a cocious effor to project the shiel to stop the King Taiju.

About Ruby taking a shot, it could that he dress is an actual "combat skirt" and the corset has some sort of armor.