Board Thread:General Discussion/@comment-38.101.126.133-20180209074821/@comment-27745396-20180215135058

In volume 5 they explained that you need to focus your aura around the area you want to protect so it's not a all time whole body armour like we, or at least I, assumed in previous volumes. This explains why Adam was able to cut Yang's arm off, kill Sienna and other "one shot" kills they will probably do in the future.

My point is that it's very unlikely that Vernal, Raven's most trusted underling, hadn't activated her aura.