Paper Shuriken

A technique that consists of pouring one's chakra into a scrap of paper in a split second, hardening and sharpening it, so it can be used as a shuriken. Its sharpness is equal to that of a shuriken made of metal. The user can further increase the power of the shuriken by making it into certain shapes.

Seijin can fold the paper shuriken into different shapes, including the normal four-pointed star shape and a more kunai-like shape. In the manga, the latter shape does not spin like a shuriken. In the anime, the shuriken spin regardless of shape.