That eerie blue sphere slammed solidly into Orochimaru's stomach.
Orochimaru spun through the air like a top, only barely stopping after crashing through several thick tree trunks.
That was right. Since he couldn't use Chidori, Naruto simply taught Sasuke the Rasengan.
With the Sharingan's boost, Sasuke proved himself quite capable and mastered it easily in just half a month.
The Fourth Hokage had spent three grueling years developing this technique, while Jiraiya had needed three months just to get the hang of it.
Of course, Jiraiya's lackluster talent was also an objective factor.
Kakashi, meanwhile, could simply copy it directly with the Sharingan.
People often said Chidori was a ninjutsu on the same level as the Rasengan.
But in terms of destructive power, Chidori's lethality was far inferior to Naruto's Rasengan.
That had been obvious from Naruto and Sasuke's clash atop the water tower. After all, Chidori was originally a knockoff ninjutsu Kakashi had created by imitating the Fourth Hokage's Rasengan.
Limited by his talent, Kakashi couldn't develop Lightning Release: Rasenshuriken. He could only settle for the next best thing, lowering the Rasengan's density so Lightning Release chakra could be infused into the sphere to achieve nature transformation.
While that gave it the piercing power of lightning, it also sacrificed the Rasengan's ability to shred opponents from the inside.
And when attacking, the user had to charge at high speed, making it easy for opponents to seize an opening and counterattack.
Without the Sharingan's dynamic vision to support it, this technique was basically defective.
That was the fundamental reason only Kakashi and his student used Chidori in all of Konoha.
If anyone else tried to use it, it would be more or less suicide.
The reason Chidori could be compared to the Rasengan was because it incorporated Lightning Release nature