A Tanto is a short edged weapon that looks very similar to the famous western daggers. It can have one or two edges, and the blade length ranges from 15 to 30 centimeters. This is not a small Katana, but a weapon in its own right, formerly used by samurai and ninjas.
Although today many people use it as a decorative element, almost like a miniature katana, the truth is that it was always a weapon that was carried on the obi or belt.
In ancient times, in the times of the medieval swords of Japan, and also later, the tanto was a widespread weapon as a ceremonial object. In fact, it came to replace the wakizashi or kodachi during the ritual known as harakiri or seppuku, which is the suicide ceremony of disgraced samurai in order to regain their honor after a dishonor.