Chakra Absorption Techniques

The Chakra Absorption Technique allows the user to absorb an opponent's chakra. In the anime, it has been shown that stored-up energy can also be released in the form of a shock wave.

The user doesn't have to actually touch the opponent as it can be used through other mediums which chakra can be channeled, as Jirōbō did with his Earth Release Barrier: Earth Prison Dome of Magnificent Nothingness.

It is unknown if this technique is truly considered a jutsu or not. It has never been given an entry in any of the databooks. However, it is not considered a kekkei genkai ability either, since it has been performed by several people with no known relation. It's most likely that the technique is simply an effect of other jutsu. Only Yoroi Akadō uses a plain chakra absorption technique. Orochimaru describes it as an unholy ability but never goes into detail.