Acid Permeation

Utakata blows acidic bubbles from his pipe that burn anything it comes into contact with. The sheer multitude and wide-range it can cover makes avoiding it very difficult.
== Trivia ==
* Santōka is the given name of . He was a haiku poet, well-known for his free style haiku lacking the traditional 5-7-5 syllabic rule and seasonal word. He is called a wandering poet for the many trips he took in his later life as a Buddhist monk, wandering through Japan without being part of a monastery.
* The san in Santōka's name is actually written with the kanji for , but for this technique, it is interpreted as , also pronounced san. Tōka is interpreted as meaning instead of and , which it means in Santōka's name.
* Although he wasn't shown using this technique in the manga, it was stated he could mix acid in with his bubble ninjutsu.Fourth Databook, page 37 This is also demonstrated in Naruto Mobile.
== References ==
es:Ácido Penetrante
pl:Santōka