Board Thread:Theories and Speculation/@comment-5407586-20150624095943/@comment-734582-20150624140221

WindStar7125 wrote: Neither. I think it's just an augmented version of Earth like Blaze for Fire. If yin augments the attack form (blaze) then yang might augment the defense form (since yin/yang are always opposites). So, Steel might be an earthlike coating.

Didn't Kakuzu harden his body too?