28683


In the hospital rooftop fight between Sasuke and Naruto, why didn't Sasuke use
his Sharingan to learn Naruto's Rasengan? Is it because the Rasengan doesn't
use any hand signs? (But Sasuke learns Rock Lee's moves with the Sharingan
even if it doesn't rely on hand signs).


CC BY-SA 3.0
2016-01-05T02:47:51.360
28678
2018-04-24T00:44:13.977
2016-11-11T02:49:59.953
29145
16712
question
naruto
Why doesn't Sasuke use his Sharingan to learn Naruto's Rasengan?


Sasuke's chakra affinity is Fire and Lightning.

In the anime, it is speculated by Kakashi that the best chakra affinity to
combine the Rasengan with is Wind.

With this in mind, it was probably best for Sasuke to focus primarily on
electric or fire based attacks, such as Chidori/Raikiri and Katon. He would be
able to elevate these jutsus far more than he can with Rasengan.


CC BY-SA 3.0
2016-01-05T08:22:47.413
28683
2016-01-05T08:22:47.413
2178
28678
answer


The Sharingan was mainly used for casting Genjutsu, following an opponent's
moves, which could be the hand signs they make, and to imitate the opponent.
Sasuke couldn't just "copy" the Rasengan, he would of had to master it too.
And if you remember when Naruto was practicing to master the Rasengan he had
to go through 3 **hard** steps. Which were with a water balloon, a rubber
ball, and an air balloon.

As I stated earlier the Sharingan can imitate the hand signs of an opponent
but the Rasengan did not require any hand signs so it would have been hard for
Sasuke to "copy" it if he did not know what to do. Also to master the Rasengan
the ninja requires extremely refined chakra control, something that very few
ninja naturally possess. That's why the Rasengan is difficult to master. In
order to help others gain the necessary chakra control, learning to use the
Rasengan is broken into three steps:

>   1. Rotation - the user learns to spin their chakra in multiple directions
> at once. To help in this regard, users may be given a water balloon so that
> they can mark their progress by the churning water; this step is complete
> once the users is able to burst the balloon with their chakra. It is
> important for the user to know which direction their body naturally spins
> its chakra for this step.
>   2. Power - the user must increase the volume and density of chakra they
> output. To help in this regard, users may be given a rubber ball: there is
> no water inside to help them burst the exterior and the rubber shell is
> thicker than a balloon's.
>   3. Containment - the user must combine the first two steps into a
> contained sphere. To help in this regard, users may be given a balloon to
> help them visualize the intended shape; if the balloon is popped or
> otherwise moves, mastery is not yet achieved.
>

I'm not sure if Sasuke has refined chakra control, but if he didn't it would
have been really hard to master it, like Naruto.

This is kind of of my opinion but I don't think Sasuke would of wanted to
learn something that is hard and takes time to master. He would of wanted
something quick but powerful, like the Chidori, to master like that he could
get ready to kill Itachi.

Also an addition to your statement in your question Sasuke did not copy Lee's
moves he just mimicked them. I know this because Lee uses Taijutsu, something
that requires no hand signs nor chakra, and Kakashi one time stated that the
Sharingan can **NOT** copy Taijutsu.

Sources:

  * [Rasengan](http://naruto.wikia.com/wiki/Rasengan)
  * [Sharingan](http://naruto.wikia.com/wiki/Sharingan)
  * [Taijutsu](http://naruto.wikia.com/wiki/Taijutsu)


CC BY-SA 3.0
2016-01-22T21:46:47.683
29194
2016-09-18T03:25:00.603
2016-09-18T03:25:00.603
20270
20270
28678
answer


Plot-holes. I love Naruto but if there was ever a real Akatsuki, Kishi would
be in it as a S-class plot hole creator. Anyway Sasuke could copy the Sasengan
just as Kakashi did; plus he made Boruto learn it so that he can master shape
manipulation at it's best. Before thinking why Sasuke didn't go to learn the
Rasengan is due to:

  1. Two contrasting teachers (Jiraiya - work hard type & Orochimaru - genius type)
  2. Sasuke's god complex (thinking he's right in everything)
  3. Sasuke intent from the beginning was to kill Itachi and Chidori is the best type for him with his speed and Sharingan.

But if we consider all this criteria and as Boruto learns from Sasuke, we
might as well assume that as both has six paths power they (both Naruto and
Sasuke) can use Rasengan and Chidori.

Assumption of course but it is plausible considering they have mastered
yin/yang styles and five elemental natures.


CC BY-SA 3.0
2017-10-06T22:58:31.927
42692
2017-10-07T01:08:51.817
2017-10-07T01:08:51.817
1587
35992
28678
answer