Oroshigane Kobuse Katana Shirasaya with Nashiji-hada Grain and Choji-midare Hamon Koshirae while polishing reveals a natural

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

iron) and finished with a deep black patina (煮黒)

forged from blackened iron（鉄地）

while the reverse presents an elegant lotus motif（蓮華図）

Oroshigane Kobuse Katana Shirasaya with Nashiji-hada Grain and Choji-midare Hamon Koshirae while polishing reveals a naturalFolded 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