Oroshigane Kobuse Katana Shirasaya with Nashiji-hada Grain and Choji-midare Hamon Koshirae The design features a series

The design features a series of evenly spaced openwork segments radiating around the guard

while polishing reveals a natural and flowing Gonome-Midare hamon (互目乱刃文) formed through clay tempering (覆土焼入れ)

The tsuka（柄）is wrapped in blue ito using hishigami（菱紙）over white samegawa（本鮫皮 / ray skin）with diamond patterns

as if the wings are gently turning in the wind

Forging Pattern (Hada 鍛肌): None (Modern monosteel

Oroshigane Kobuse Katana Shirasaya with Nashiji-hada Grain and Choji-midare Hamon Koshirae The design features a seriesFolded Oroshigane Steel Shinken () Nashiji Choji Katana: TangGu () Oroshigane () Kobuse Blade () + TangGu () Shirasaya Koshirae () This blade is forged from in house refined Oroshigane (), using the Kobuse zukuri () construction. The folding process produces a refined Nashiji hada (), where shimmering grain textures resemble scattered pear skin particles under light. Polishing reveals an elegant Choji midare hamon (), its clove shaped undulations