Shinjigen

Shinjigen is the strongest and highest level technique of kekkei genkai Ijigen. It has only been learned by few Byakka, and currently only Eiden Byakka is confirmed having this ability.

Overview
Shinjigen means new dimension, and like its definition, it is an ability of creating a new dimension or a new world. This ability requires immensely high chakra to setup and furthermore, constant chakra absorption is needed to maintain the different dimension. The only way to access it to connect it using Portal, one of the two basic technique of Ijigen.

According to Eiden, the most important requirement to activate this rare ability is to have great and unique imagination. Most of the strong users tend to throw the fun away for the sake of power while the weak has the former but not talent. When they begin to seek for talent, they would throw the feeling of fun because it is indeed a burden to become stronger.