[Mr. Johnny 5]

Originally Posted by Ryukage

Spoiler for Sasuke's Speed:

Well Sasukes speed has increased 10 fold right, if Yondaime took out hundreds of Ninja with Hiraishin perhaps this is a new Jutsu of Sasukes. It would be quite fitting. Here is a shitty dialogue I prepared to explain what I mean.

Sasuke: Naruto uses that jutsu, the Rasengan..
Orochimaru: Ah yes, one of the Fourth Hokages famous techniques.
Sasuke: If his jutsus are truly that strong to his legend.. I want to know a jutsu of his aswel.

I don't know how he would of aquired Hiraishin, or if it even is Hiraishin. Just an up in the air theory.

Spoiler:

I doubt that....and rather....that's impossible because when Yondaime was known as the Yellow Flash....Orochimaru was already banned out of the Fire Country...teaming up with Sasori in the group Akatsuki.

There are definetly chances that he has heard about it but i doubt that he actually saw the jutsu.

And if Sasuke has Hiraishin then in my opinion he definetly can kill Itachi right away. And he'd be too overpowered in the whole series of Naruto.