Board Thread:General Discussion/@comment-130.245.192.22-20170629055623/@comment-4010415-20170905023145

Aura acts as armor that coats a person's entire body to protect them from harm. It's even more effective once that person learns how to amplify and control it, according to WoR: Aura.

It also seems that people who have had extensive training with Aura control can also localize their Aura's protection to a circular shield, like we have seen Ren, Cinder, and Amber do. Ren, and possibly Fox, also displayed the ability to focus Aura into enhancing martial arts attacks.