Limbo

Limbo is an invisible world that is parallel to the normal world in almost every way. It contains the same structures, villages, and sprawling landscapes but lacks one thing, life. Life cannot form in the world of Limbo as it is simply a shell of the normal world that changes as the world outside is affected. One clan using a special technique passed down through their family was actually able to access this world and eventually made their home there during the warring states era, this clan was called the Doukeru Clan. While in this world the clan cannot touch anything in the physical realm and vice versa. However after the fourth war a terrible tragedy happened in this realm.