Board Thread:Episode Discussions/@comment-1181222-20170823100207/@comment-734582-20170825152030

UltimaDude wrote: Well, regardless, there's literally nothing special about Sasuke's sword to assume that it is different than any other sword The fact that it pierced Naruto's cloak easily despite Shin's knives being unable to do so suggests otherwise.

Besides, weapons like Kusanagi were forged, it's not impossible that Sasuke learned how to make his own, or an imitation thereof.

And lastly, Sasuke's sword effortlessly pierces stone, so i don't think it's a generic sword by any measure.