Katana Spring Ember Oroshigane Kobuse Blade Sakurai Mokko Koshirae 春霞Folded Oroshigane Steel Shinken () Spring Ember Katana: TangGu () Oroshigane () Kobuse Blade () + TangGu () Sakurai Mokko 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, featuring a hard outer layer wrapped around a softer corean approach shared with classical

tightly wrapped over hishigami for clean

The tsuka (柄) features a brown tsuka-ito tightly wrapped over natural white samegawa (白鮫皮)

segmented appearance reminiscent of a bamboo flute

and aesthetic balance

Clay Tempered Full Tang Shinken (真剣) | Black Wave Katana: TangGu (湯谷) Maru Blade (丸造) + TangGu (湯谷) Kuronami Koshirae (黒浪拵)

resilient spine

This traditional-style koshirae combines functional design with traditional aesthetics

vacuum heat treated to achieve a controlled balance of hardness and exceptional toughness

mirroring the divine protectors seen on the tsuba

Sageo (Cord 下緒): High-quality black rayon sageo

Temper Line (Hamon 刃文): The blade shows a Notare-style hamon（のたれ刃文）formed through clay tempering（覆土焼入れ / Fukutsuchi Yakiire）

Tsuba (Handguard 鍔): Kuruma-sukashi Tsuba – Blackened Iron (鉄地)  Wheel-style Guard (Practical Use)