Naraka Path(Douju)

The Naraka Path (地獄道, Jigokudō) grants the user three main abilities: interrogation, sealing, and restoration, by using the King of Hell.

Overview
The Naraka Path ability makes heavy use of the King of Hell. The King of Hell is a large head which sprouts out of the ground surrounded by purple flames. It also possesses the Rinnegan as well as the shared field of vision along with the other summons. The King of Hell could fulfil three purposes: interrogation sealing, and restoration.

To interrogate, the Naraka Path need only catch hold of a person, causing the King of Hell to appear before them. With the victim seemingly paralysed, the Naraka Path begins questioning them. After answers are given, the King of Hell will unzip its mouth to release tendril-like arms and would draw out an apparition of the victim's life force energy in the form of an enlarged tongue. The King of Hell would then proceed to pass its judgement. If the person was lying or refused to answer the questions, the King of Hell would remove their tongue and consume it, apparently killing them. However, if they told the truth, they would be spared, although left extremely exhausted.

To seal, the user captures the victim(s) using the King of Hell, and absorbs the chakra slowly. While doing this, the chakra is formed into a seal which affects the victim's use of chakra leaving them weak, thus causing the body to be stuck inside unless removed by the user.

The second ability the Naraka Path possessed is the ability to repair any damage. To do so the Naraka Path has the King of Hell ingest the damaged body with its tendril-like arms into its mouth, then, after some time, the destroyed body will emerge from its mouth, completely rejuvenated.

Trivia
Doujinn discovered the sealing ability when trying to capture a Jinchūriki.