Red Rayskin Wrapped Saya 赤鮫皮 Option:Genuine Rayskin while the ocean wave suggests

while the ocean wave suggests enduring energy and the flow of time

smelted from satetsu (砂鉄) and repeatedly folded (orikaeshi-tanren / 折り返し鍛錬)

Temper Line (Hamon 刃文): Irregular Midare with Gunome influence（互の目交じりの乱れ刃文）— uneven waves and rounded peaks formed by clay tempering

Shinken (真剣) | Vajra Katana: TangGu (湯谷) Maru Blade (丸造) + TangGu (湯谷) Kongo Koshirae (金剛拵)

Materials: CPM-3V powder steel

Red Rayskin Wrapped Saya 赤鮫皮 Option:Genuine Rayskin while the ocean wave suggestsHandcrafted Red Rayskin Wrapped Saya with Natural Horn FittingsKoshirae Grade Finish This handcrafted saya is a Red RayskinWrapped Saya (), featuring a rich red finish that adds distinctive texture and visual depth, providing a refined yet powerful alternative to conventional lacquer only saya. The red tone conveys vibrancy, strength, and elegance, while preserving the understated aesthetics of traditional craftsmanship. The koiguchi (mouth), kurigata