Shintō Barrier Ninjutsu

is an advanced form of Barrier Ninjutsu, created by the Fourth Amekage for free-use by Amegakure shinobi. It is commonly referred to as just Shintō Kekkai.

Usage
Before learning, a beginning user must have fair knowledge and usage of Barrier Ninjutsu. Mainly to the point of being able to erect simple barriers with one-handed seals. A staff, spear, tenkei or other long tool must also be wielded for use.

By forming hand seals with one hand and channeling one's chakra through their desired tool, multiple barriers can easily be held for formed for extensive periods of time. Normal Barrier Ninjutsu are empowered to be a time and a half stronger than usual when used in this method. Though barriers are usually meant for defensive purposes, this style allows them for many supportive and offensive purposes.