Shape Transformation

Shape Transformation (形態変化, Keitai Henka) is an advanced form of chakra control and a technique that is pivotal for the manipulating chakra and the creation of new jutsu. It involves the changing of the shape and movement of chakra, determining the size, range, and purpose of a jutsu.

The ultimate example of shape manipulation in 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 down into the shape of a sphere.

Combining with Nature Transformation

Shape Transformation is one of two necessary techniques for creating a jutsu with its counterpart being Nature Transformation. While Shape Transformation changes the form and movement of chakra, Nature Transformation changes the actual nature of the chakra, altering its properties and characteristics. Because of this, a technique like Rasengan can be turned into Wind Release: Rasengan or Wind Release: Rasenshuriken. The cutting nature of Wind Release can be combined with the spiraling movement of chakra, changing the chakra into millions of minuscule blades, in a spiraling formation as seen when used against Kakuzu.

Sasuke has also been seen using Shape and Nature manipulation with the black flames from Ameterasu, creating Enton.

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