In fact, by Part II, Sasuke Uchiha has managed to master the Chidori to the point of not needing a single hand seal to invoke it and could use Fire Release techniques with only one hand seal.
If you have followed the Naruto series then you must remember that Sasuke lost his left arm in the 4th Great Ninja War. After this Sasuke learned to use Hand seals which includes Ninjutsu with one hand. As a matter of fact he could even use his other techniques with minimal use of hand seals and by using one hand only.
For the most part, Sasuke only ever used one hand with any sword he used, giving him a burst of quickness with them, but that doesn't change that the lack of a second hampered him. It is especially true in a taijutsu fight where blows are coming at you so rapidly that you have little time to think.
Sasuke has not been seen using this form of the technique since his fight with Naruto at the Valley of the End, and it is presumed that the ability to do so was lost along with his Cursed Seal during his battle with Itachi.
Although rare, it is possible for a shinobi to be able to do hand seals with just one hand. The only shinobi seen so far capable of this are Zabuza Momochi, Haku, Itachi Uchiha,Guren, Minato Namikaze, Naruto Uzumaki, and Sasuke Uchiha.
He seemed to have used the Chakra of the Four-tailed beast to form a Lava Style: Rasenshuriken, which he hurled at Madara. After that, since he learned a great amount about Chakra control, the process seemed to have gotten easier, enabling him to use various forms of the Rasengan single-handedly.
At first, Naruto had a better grasp over the wind element, but Chidori required lightning. The series' protagonist gained a perfect hold over most types of natural Chakra after gaining the Six Path Senjutsu. But the question remains whether he could have mastered Chidori during his teenage days. Well, the answer is no.
After losing his Sharingan in Naruto, Kakashi replaced Chidori with its lightning-based counterpart named Purple Lightning, which is nearly identical but without the speed boost and piercing power. Unlike Chidori, Kakashi is able to use Purple Lightning in both close and long-range fights.
The Chidori was created by Kakashi Hatake after he failed to apply his lightning-nature to the Rasengan. He intended for the Chidori to be a weapon used only to protect friends and loved ones.
With His Prosthetic Arm, Naruto Can Harness His Full Power
It was a reminder of how much he needed to atone for attacking Konoha. In contrast, Naruto's arm was recreated using Hashirama's cells, but bandaged to avoid looking like the evil White Zetsu.
According to a theory elaborated by fans, Sasuke never actually lost his Rinnegan, he just needs a catalyst to re-awaken it.
But if Sasuke was given a new arm replacing his left arm with Hashirama cells then he would be so powerful and would get a rinnegan for his right eye, able to beat anyone so hard that no one especially Shin couldn't beat him, however Naruto would with his Six Paths Sage Mode, but he wouldn't beat him at his normal form ...
1) Sasuke Uchiha
Sasuke is stated to be the strongest lightning user in Naruto. He learned Chidori from Kakashi and eventually made it his signature technique. Sasuke also uses his lightning release in conjunction with other techniques to make it even more devastating.
The Chidori was created by Kakashi Hatake after he failed to apply his lightning-nature to the Rasengan. He intended for the Chidori to be a weapon used only to protect friends and loved ones.
Itachi can do chidori because he can just copy the hand seals for it, but he cannot copy rasengan with his sharingan. Itachi can learn how too do rasengan and he would learn very quickly being a genius and all. As for orochimaru, he could do chidori and rasengan too but someone would have too teach him.
Despite not being able to copy jutsus in the Naruto series, he still has access to over 1000 jutsus that he copied when he had the Sharingan. Fans are aware of the fact that Lightning Release is stronger than Earth Release, but Kakashi managed to improvise an Earth Release technique that is unaffected by lightning.
However, Kakashi was shown to be a ninja prodigy even before he gained the Sharingan, meaning the statement of Kakashi being weaker without the Sharingan is an unjust assumption. Analyzing his current skills and achievements reveals how strong he truly is, even without the visual jutsu.
Sasuke's Right Mangekyo Sharingan
While Sasuke's left eye ability was similar to that of his brothers, his right eye ability is completely different. Using his right eye, Sasuke can use a jutsu called Kagutsuchi. This technique allows him to manipulate the shape and form of the black flames that he produces.
Use The Chidori
This technique is as powerful as it is versatile, and easily one of the coolest jutsu in the series. Itachi doesn't have anything close to this attack, by any measure.
The answer to this is “Yes!” Naruto is indeed capable of using all five Chakra Natures, at least by the end of Shippuden. While he did start out showing prowess in one or two elemental affinities, Wind, for example, the main protagonist was able to learn every other element by the time the Fourth Shinobi War concluded.
Although many taijutsu techniques look difficult to do in real life—and they indeed are—many of them are based on official forms of martial arts. Here are 10 taijutsu techniques someone with professional and proper training could attempt in the real world.
The thing is, unlike most Rasengan users, Naruto is the only one that took the Rasengan to a whole other level, his lack of other techniques made him rely on the Rasengan like nothing else. His whole Jutsu reserves are basically Kage Bunishn and tens of different Rasengan versions.
According to Jiraiya, Rasengan is the second hardest jutsu to learn. The first is even more difficult and challenging.