The lineage of the Japanese sword can be traced back over a thousand years, and throughout its long history the sword has emerged as one of Japan's most durable cultural assets. Part of its mythical appeal lies in the unique harmony of its historical roles as deadly hand-held weapon, embodiment of the samurai spirit, and powerful symbol of warfare. The types of sword that have been made, their forging methods, and the styles of blade have been influenced by historical events and shaped by developments in the means of combat, giving rise to five distinct periods and a
