User blog comment:Maki Kuronami/Lesson 6: Aura and the Grim diversity/@comment-173.255.143.228-20130823005740

My first thought (and how Jaune get his aura) resemble with Nen (念 ) HxH.

a simple speculation would be like Ki (since Pyrrha explain about 'being watched without knowing someone's there'. or perhaps I'm taking it too far?). looks like magic, but when Monty insist to said there's no magic in RWBY, I can expect 'power acquired from years of training and fighting' kind of answer.

The Aura can be used as Presence detector, Shield, and Internal Ki's Cannon (just like Ren did), Quick Regeneration (Like what Jaune did to himself), and Ability Boost (like Ruby's speed and Yang's Rage).

The Question is : Is there any category of Aura?

you can detect the snakes with aura, so that means you can use it to hide your presence? (Now it's really looks like Hunter x Hunter)