Board Thread:General Discussion/@comment-24573226-20160623204034/@comment-28288412-20160624185224

Back. Basically the argument (which would be a giant stretch) would be that it was genetic fuck up.

We know that aura and the soul is tied to genetics to some extent due to the Schnees. As aura is a physical manifestation of aura, an extention that can be fully depleted, a human can survive without as its been shown without an aura.

So basically a genetic mutation (probably wrong term) that is unbelievably rare and detrimental.