"Iai" is a Japanese martial art that refers to the technique and practice of quickly pulling a sword out of its sheath and slashing. The purpose of Iaido is to react instantly the moment an enemy approaches, quickly and accurately draw your sword and attack. Therefore, Iaido training focuses on training concentration, technique, and mental strength. Among the samurai, those who are particularly skilled at Iaido are highly respected, and swordsmen who have mastered that technique are known as ``Iaido masters.''