The fox shaped 'scar' on Ferrin where the array previously was located, was similar in appearance to the tattoos that would spontaneously manifest on the bodies of those from the nomadic tribes south of the Empire. The only difference was the colour, a tattoo for a dark-attribute fox should be much darker in colour.
Thankfully, there was a special ink to create tattoos indistinguishable from those that naturally manifest among the southerners. Apparently, it was developed when the relationship between the tribes and the empire was at its worse and they needed to send over spies that could blend in.
Now they could reap the benefits of their ancestors.
Serena tattooed over the white fox using black ink, and they decided that their cover-story would be that Ferrin had spontaneously manifested the tattoo at a late age to become a beast-tamer.
