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. Konan is seen using them combined with Nagato's Wind Release: Violent Wind Palm, speeding the shuriken and enabling them to pierce the body further.

Trivia

 * In the manga, the shuriken do not seem to spin.