Katana Radiant Wheel Oroshigane Kobuse Blade Kōrin Koshirae 永輪Folded Oroshigane Steel Shinken () Radiant Wheel Katana: TangGu () Oroshigane () Kobuse Blade () + TangGu () Krin Koshirae () This katana brings together the refinement of traditional craftsmanship and the structural integrity required for practical use. The blade is forged from in house refined Oroshigane () steel in Kobuse zukuri () construction, with a resilient outer layer encasing a softer corean approach mirrored in classical tamahagane blades

ensuring structural strength and organic beauty

Buffalo horn（牛角 / Gyu-kaku）is used for reinforcement at the koiguchi（口金）

Handle Wrapping ( 柄巻): High-quality green silk (or cotton) tsuka-ito

The tsuka is wrapped in green ito over white samegawa (ray skin) with hishigami inserts for a symmetrical grip

Forging Pattern (Hada 鍛肌): Ayasugi-hada（綾杉肌）— cedar-grain pattern with alternating waves

hand-carved in katakiribori (片切彫) style with cherry blossom and wave motifs

The menuki (目貫) are crafted from yellow brass

Handcrafted Black Ishime Lacquered Saya with Natural Horn Fittings｜Koshirae-Grade Finish

Forging Pattern (Hada 鍛肌): None (Modern monosteel

forming a flowing Notare-style hamon（のたれ刃文） along the edge

creating a refined variation known as Jūji Kikkō

Niku Geometry