Traditional Hand-Forged Full-Tang Clay-Tempered T8 Steel Katana SPECIFICATIONS Blade color - Material Clay-Tempered T8 Steel Guard (Tsuba 鍔) Aged Bronze Scabbard (Saya 鞘) Solid Wood Handle (Tsuka 柄) Imitation Rayskin Over Solid Wood Menuki Aged Bronze DIMENSIONS Length with scabbard 40.55 in (103 cm) Length of the blade 27.95 in (71 cm) Length of the handle 12.6 in (32 cm) "A fire that consumes the shadows, burning with a silent, unyielding heat." The "Koku-en" (黑焰)—Black Flame—stands as an exceptional achievement of traditional steel forging. This piece is a bold exploration of high-contrast aesthetics, designed for those who seek a commanding presence paired with the reliable performance of traditional materials. It is a peerless creation brought to life through the rigorous discipline of the classical forge, resulting in a forged achievement of unparalleled structural beauty and intense visual authority. The physical integrity of the piece is defined by exacting, time-honored forging methods. Through traditional clay-tempering, a bold, naturally occurring hamon—a highly visible, undulating wave—emerges along the polished steel profile. This specialized thermal treatment ensures the authentic dynamic balance and resilient properties inherent to historical steelwork, allowing the piece to handle with a natural, unyielding fluidity that mirrors the flickering energy of its namesake. Complementing the rigorous forging of the steel is the fierce visual depth of its fittings. The tsuba showcases a remarkable, textured finish with a gold-toned rim and a traditional tomoe motif, providing a sophisticated anchor to the design. These rich tones create a dramatic contrast against the deep black handle wrap and the vivid red rayskin foundation. The piece is housed in a premium solid wood scabbard featuring a deep, textured crimson finish that perfectly embodies the spirit of an unyielding flame. Integrated through heritage practices, the handle utilizes imitation rayskin over solid wood to ensure uncompromising structural stability. The Koku-en remains a unified, highly aesthetic tribute to the exacting standards of the classical forge.