A Katana is considered the sould of a samurai, its main weapon, then the wakisashi and lastly the tanto. Have you ever wondered how long it takes to forge a Katana?
Historically, katana were one of the traditionally made Japanese swords (日本刀 nihontō?) that were used by the samurai of ancient and feudal Japan. The katana is characterized by its distinctive appearance: a curved, single-edged blade with a circular or squared guard and long grip to accommodate two hands.
The rise in popularity of katana amongst samurai came about due to the changing nature of close-combat warfare. The quicker draw of the sword was well suited to combat where victory depended heavily on short response times. The katana further facilitated this by being worn thrust through a belt-like sash (obi) with the sharpened edge facing up. Ideally, samurai could draw the sword and strike the enemy in a single motion.
To read more about the Samurai Sword visit Wikipedia