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Soft Physique Modification
Kanji 軟の改造
Rōmaji Nan no Kaizō
Manga Volume #6, Naruto Chapter #47
Anime Naruto Episode #28
Novel Boruto: Naruto the Movie
Movie Boruto: Naruto the Movie
Game Naruto: Ultimate Ninja 2
OVA Boruto OVA 1
Appears in Anime, Manga, Novel, Game, Movie
Classification Hiden, Ninjutsu
Class Defensive, Supplementary
Derived jutsu

Originally developed for spying activities, this technique can be done after some surgery and actual body modification. The user dislocates their joints then controls their softened body with chakra, allowing them to stretch and twist any part of their body at any angle, elongating and even coiling around their opponent. This can also be used to make the user's body more malleable and snakelike. Orochimaru's version allows him to stretch any of his body parts well beyond their normal length and allows him to move in the manner of a snake.


  • Rokurokubi (ろくろ首) are yōkai that were originally humans, but broke the precepts or doctrines of Buddhism. Cursed, these monsters had infinitely extendable necks and used them to spy on mortals. The worst of these preyed on humans or bit them and drank their blood (much like how Orochimaru gives his cursed seals).


  1. Rin no Sho, page 212