Board Thread:Naruto Discussions/@comment-26403664-20160228225013/@comment-142748-20160414044233

Any claim that the Yata Mirror and Totsuka Sword, are invincible is simple hyperbole. We've seen several times in this manga that nothing is invincible, everything has a weakness that can be exploited. And we've also seen the upper limit to what Yata Mirror can block: Kirin, a rather low level mountain busting attack.

Hyperbole: 1.obvious and intentional exaggeration. 2.an extravagant statement or figure of speech not intended to be taken literally, as “to wait an eternity.”.

Its not the first time a hyperbole has been used. Take the infamous 'Haku is lightspeed' in Databook 1 or Itachi's water fangs moving at the speed of light. Or the infamous 'Only a Uchiha can defeat an Uchiha'.