Board Thread:Versus Debates/@comment-26993711-20160324045212/@comment-734582-20160411112625

Nunoboki is to me just a technique name. TSB's can already change shape and composition into whatever the user needs. Nunoboko doesn't seem to be anything other than just a shape.

Sasuke's sword is called Kusanagi as well, i believe. It's possible these legendary weapons are simply remade, and the secret to their creation is what's valuable.