Ninjato
The Ninjato is a straight sword that was used by ninja agents (also known as Shinobi) to assassinate from the shadows. Thanks to its structure it can be easily concealed, and once unsheathed, it allows for quick, deadly stabs.
The sword’s scabbard can be used to hide a variety of gadgets, such as poison, darts, and spikes. Some Shinobi also modify them to be able to use them as climbing hooks.
In their hidden villages, ninja agents spend entire days training in the art of fighting with ninjato. They learn the deadliest way of using this sword. With enough training, a Shinobi can take down several enemies without making more noise than the wind blowing.