Jiraiya told Naruto that Rasengan is the second hardest jutsu to learn. What is the first?

"Feasibility of Rasengan Forget about jutsus. As everyone has their own different chakra nature it's never the same. So therefore which “jutsu†Is the toughest to learn becomes very subjective.

This is exactly why they decided to rank the jutsus according to their difficulty level. So Rasengan is A rank known as the 2nd toughest criteria. All the jutsus in rank A are on the same level.

But there's an aspect where all shinobi’s difficulties match.

So these are the things that every genin, chunin and jounin have to go through to upskill themselves. Those are:-

1. Change in chakra form aiding Rasengan

Shape transformation is an advanced form of chakra control that involves controlling the form, movement, and potency of one's chakra, determining the size, range, and purpose of a technique.

The ultimate example of shape manipulation is the Rasengan, which is described as shape manipulation that has been taken ""to the highest possible level"".

The Rasengan relies heavily on chakra control and does not require the use of hand seals. By building up on precepts learned from the Tree climbing practice and Water Surface walking practice chakra control exercises, the Rasengan is chakra that has been rotated and then compressed into the shape of a sphere.

2. Change in chakra Nature.

Nature Transformation is an advanced form of chakra control that entails the moulding and defining of the nature of one's chakra, altering its properties and characteristics for use in techniques. Nature transformation is one of two necessary components for creating or modifying a technique, the second component being shape transformation. While nature transformation changes the properties of the chakra, shape transformation changes the actual form and movement, altering its abilities.

The release of elemental chakra is typically suffixed with ""Release""

So these are one of the toughest things that every ninja faces.

But you know what the toughest of all time is?

Adding Change in Chakra Nature Into Change in chakra form.

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This is something that extremely disciplined, focused and talented characters weren't able to pull off. Like Minato Namikaze or Kakashi Hatake.

Kakashi also mentioned that this process can easily take decades with daily strenous training and still not produce results. Naruto was able to do this because of his enormous chakra reserves and thousand shadow clones.

Do you know what you get when you combine wind style to a Rasengan?

What happens when you further add lava style?

What happens when you further add tailed beast bomb?

So basically the toughest thing to do is performing a jutsu which involves combining change in chakra nature into a change in chakra form.

By- Mahesh Kumar

Source: Quora

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