A ninja's arms.

A ninja's arms.Throwing knife(Shuriken). The range of a Shuriken is 6～7m. However, the Shuriken were powerful arms. It is because the combat at close quarters was held with the sword a long time ago. The star type Shuriken has the power which can make a hole in the steel can containing contents. Furthermore, the stick　type Shuriken has power to the extent that a tatami is penetrated. Shuriken are arms which are equal to the handgun of 38 calibers. Moreover, the ninja is said to have used having applied poison to the Shuriken.