Iaidō is a Japanese martial art focused on using the sword, drawing and cutting in a single stroke. It is practiced in prearranged movements called kata against different scenarios and surprise attacks from imaginary opponents.
Iaidō was originally practiced by Samurai for self-defence or even assassination. Over past last four hundred and fifty years these sword techniques have developed into a Dō - a way of self improvement, character building and moving meditation while teaching effective use of the Japanese sword.
The name iaidō (居合道) comes from an old Japanese saying:
Tsune ni ite, kyu ni awasu
Constantly present, swift in response