Board Thread:Episode Discussions/@comment-1181222-20170823100207/@comment-734582-20170826161643

Berserkchart486 wrote: But the sword isn't the Kusanagi. It's some random blade at the moment. Remember, he lost his Kusanagi fighting Kaguya. If that weapon was forged for him, then he can forge that weapon again. I find it hard to believe that with all that power, insight and those Dojutsu, Sasuke would have trouble creating a powerful sword. If he witnessed the creation of the sword, then via the Sharingan he could simply copy the process. We saw that Nagato was able to make futuristic weaponry with the Rinnegan, and we've seen both Madara and Sasuke improvise and develop Jutsu on the spot with the Rinnegan.

Hungry Ghost realm wrote: Kusanagi can cut through everything even other spirit weapons like enma. It cannot be possibly forged. Even if it was forged it was by some real god-tier character which makes it near invincible. Orochimaru's Kusanagi could not pierce through a 4-tails Kyubi cloak, so it's evidently not invincible. Sasuke can also be considered a god-tier character now.

Someone must've forged Kusanagi and Totsuki and Yata. Such things do not appear naturally. Yet we've seen that the Sage could even forge the Nine Tailed Beasts from a parent spirit. So really, why is it so hard to believe that someone like Sasuke could forge his own weapon and imbue it with unnatural sharpness? It's hardly the most insane power in the Narutoverse.