The Muramasa sword is a legendary Japanese blade, crafted by the renowned swordsmith Muramasa Sengo during the early 16th century. Known for its exceptional sharpness and quality, these swords are often associated with a cursed reputation, believed to bring misfortune to their wielders. Muramasa swords are characterized by their distinctive hamon (temper line) and intricate designs. They were highly valued by samurai and collectors alike, and today, they are considered important artifacts of Japanese culture and history, often sought after for their craftsmanship and storied past.