Board Thread:Speculation House/@comment-10380701-20140808014446/@comment-10380701-20140808030209

Take note though, that Aura offers minor protection.. It's why nobody bleeds or gets seriously injured in-series.

And since weapons are the conduits for Aura, Aura-empowered weapons are powerful enough to slice through Grimm.

Penny manages to do all that with no Aura. Minus the Grimm slicing one of course. Since she destroy an AIRJET instead.