This samurai armor features a cuirass of the dōmaru type, constructed with small scales (iyozane) lacquered in black and laced together with dark blue silk cords. The dōmaru style, which wraps around the body and fastens on the right side, was favored by high-ranking warriors during the Muromachi and Sengoku periods for its balance of protection and mobility. The refined contrast of glossy black lacquer and deep blue lacing conveys both martial dignity and aesthetic elegance.