Self-Collaboration Ninjutsu

Self-Collaboration Ninjutsu (我コンビ忍術, Gakonbi Ninjutsu; literally "Self-Collaborative Ninja Techniques") is a style of Ninjutsu invented by Seireitou Hyūga.

Overview
Born from his unrivaled mastery of Taijutsu, which preaches the art of self-control as the foundation of all things, Seireitou is capable of creating an actual axis within the middle of own body, vertically straight down his body. In doing so, this allows Seireitou to freely control the left side and right side of his body as though he were acting like two separate people. The purpose in doing so is to make the body naturally mold chakra in two distinct locations rather than one location, as it would in most normal people, allowing Seireitou to essentially build up two different elemental chakras at the same time and release them together as a single ninjutsu. Hence, the term "self-collaboration" refers to the art of using a collaboration jutsu on his own.

Behind the Scenes
This was inspired by the Split Self technique used by Hayato Fūrinji in the manga series, History's Strongest Disciple Kenichi.