The world of weapons in itself is wide enough, but ninja weapons are a whole group as well. They were all invented with crucial detail and many for specific needs. That also encouraged the growth of ninja weapons as time went by. If you look at the incredible types of weapons, the most common ninja weapon would be the throwing stars and nunchucks. These are two very specific kinds of weapons that define the idea of ninja fighting and principles. Unlike the weapons that you get nowadays, these two are unique and also define the technique of Martial Arts.
