Sacred Realm

The is a realm in between the Inner and Outer Path in which creatures or items are either sent to or banished to by the Sage of Six Paths' spirit. It is unknown what the Realm looks like, but it is said that is impossible to escape.

Known Creatures or Items Trapped in the Sacred Realm

 * Wholesome Lightning Demon Spirit of the Sacred Realm
 * Lightning Release: Righteous Intertwined Eels of the Sacred Realm

Trivia

 * It is said that most things that enter the Sacred Realm usually come back to the Human Realm as Lightning Release jutsu.
 * It is unknown if there are others that dwell in the Sacred Realm, but those most infamous are said to have tried to bring down the Sage of Six Paths.