Pitch-Black Inquisition: Keystone

A unique technique stemming from Pitch-Black Inquisition series, Pitch-Black Inquisition: Keystone is a unique, multi-layer Barrier Ninjutsu capable of blocking and even redirecting attacks on Sadao's person. It is normally invisible to the naked, aided and dojutsu enhanced eyes, though appears as a hexagon-shaped barrier when visible. It can be trigger manually or autonomously. It works by increasing its size to deal with the scope of an attack, while analyzing then removing the form from said attack. It will use the spiritual essence of the attack to further empower itself before going back on standby. When redirecting an attack, it enlarges to the size of the aforementioned technique before imagining said technique into existence, sending it on a trajectory towards the target.

Alternatively, the leftover from blocked and absorbed techniques can be used to heal Sadao at an extreme rate, granting him a healing factor.