4. Sengo Muramasa – Muramasa Blades
Muramasa Sengo was a famed swordsmith during the Muromachi period (14th to 16th centuries) in Japan. He was said to be a “most skillful smith, but a violent and ill-balanced mind verging on madness, that was supposed to have passed into his blades.” His weapons were believed to hunger for blood, and to compel their wielder to commit murder or suicide.
He started the Muramasa school, and was believed for a while to have been a student of legendary weaponsmith Masamune. That claim has since been debunked, as Muramasa crafted swords nearly 300 years after Masamune. His first signed work was dated in 1501, and by 1535, Muramasa blades were recorded in the hands of Daimyo and generals.
In 1603, his swords fell out of favor after Tokugawa Ieyasu became shogun. It was said that Ieyasu lost many friends to Muramasa blades, and had cut himself badly on one, and thus forbade his samurai to wield them. Due to the stigma attached to them, this only grew Muramasa’s legend in plays, dramas, and literature. Characteristics of his blades include a unique mirror-image created by the hardening process.
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