Iaido

Practitioners of iaido are often referred to as iaidoka. Because iaido is practiced with a weapon, it is almost entirely practiced using forms, or kata. Multiple person kata exist within some schools of iaido, when iaidoka will usually use bokken for such kata practice. Iaido does include competition in form of kata but does not use sparring of an
Found on http://en.wikipedia.org/wiki/Iaido
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