Yomotsu An’unsai

is a prolific jujutsu designed by Jinpachi Budō and is inspired by the realm of Jashin itself. By clapping his hands, Jinpachi manifests a foreboding, somber fog that spans over the battlefield. By infusing this fog with Dark Chakra and Dark Release, Jinpachi can cause it to gradually drain both physical and spiritual energy from opponent. This moderate chakra drain, takes quite a bit of time to completely siphon the opponent's chakra and it is able to mitigate the effects of other absorption techniques. Progressively, the fog transfers the siphoned chakra into Jinpachi thereby strengthening his reserves while simultaneously withering away the opponent's.

The fog can be dispersed by Wind Release techniques but eventually returns to it's original spot within a few minutes. As the fog can eventually hinder the sight of most Dōjutsu, Jinpachi can further his concealment by masking his to match that of the fog, though, the Byakugan is still able to peer through the thick fog and spot him. However, sensors are able to be somewhat fooled. The deviously subtle purpose behind the technique is it's hidden function. This is to dampen the effectiveness of Regeneration Techniques and makes all damage done within the fog incapable of being restored and after some time, can wear down the most robust opponent's regardless of self-proclaimed "immortality". In order to defend against the technique, the opponent can attempt to the fog or erect a  to protect themselves, though eventually, the barrier itself will by absorbed by the fog.

Jinpachi is able un-summon the fog at anytime and it presumed to have a form of consciousness as it positively reacts to negative emotions by growing in size and is able to follow Jinpachi as he is the core of the technique. Regardless of the amount of chakra the opponent has, they are all eventually left emaciated if left in the fog for too long. Those with smaller reserves would only last for several minutes before becoming to fatigued to fight back.

Drawbacks
Even though the technique is vast in range, users of Space–Time Ninjutsu are able to quickly get out of range of this technique before their vitality is greatly reduced. Other methods include specific Fūinjutsu that may assist in sealing a large portion of the fog. The fog is stationary upon arrival, therefore efforts can be made to exploit this fact. Jinpachi's own healing technique still function but at a greatly reduced rate making attack with a large area of effect more advantageous.