this mask is a technique used by the shadow ninjas of the ninjato word it is called Chishadowmeh, far more powerful then the Shadowmeh which merely turns the eyes black and allows them to see shadows that have been there and no longer are, the true power of this mask is unknown even to the few who wield it in the hero corps. It's another version of my first this one as you can see after trying it the blood have a light glow and the eyes are a bit beter