There are different knives available in the market these days. One incredible knife among them is called a kunai. A kunai knife is one of the most popular ninja weapons. It is a different knife from other knives available in the market. It is small and has a needle-like blade, making it a deadly weapon. It is a historical knife, and here is everything you need to know about it.  Kunai - A Ninja Weapon A kunai is a ninja knife basically and is a real ninja weapon. There are many ninja weapons available in the market these days. However, not all of them are real. A few are wrongly associated with the ninja warriors. However, as far as kunai is concerned, it is a real weapon of the ninja.  History of Kunai Knives Kunai knives have a great history behind them. These knives are known to be the tactical knives used by the ninja. Basically, a kunai is a knife that looks like a long needle. There is a long and sharp blade. The ninja warriors used these knives for maiming and not for killin