Katana Tide Breaker Sanmai Blade Shioban Koshirae 破潮Clay Tempered Full Tang Shinken () Tide Breaker Katana: TangGu () Sanmai Blade () + TangGu () Shioban Koshirae () This katana, named Tidebreaker, is mounted in Shioban Koshirae. The blade is forged in Sanmai construction, placing a hardened steel core between softer outer layers for strength, durability, and balanced cutting performance. It is clay tempered, forming a flowing Notare style hamon along the edge. The surface shows Masame hada mixed with

rests beneath the grip

creating a sophisticated balance between natural texture and celestial brilliance

and radiant—ideal for mounting as part of a complete koshirae

Forging Pattern (Hada 鍛肌): Masame-hada（柾目肌） — a straight-grained forging pattern created through layered forging in the sanmai-zukuri style

The tsuba (鍔) is a mokko-gata (木瓜形) iron guard with blackened patina (煮黒仕上げ) and plum blossom-shaped sukashi (梅花透かし)

Clay Tempered Full Tang Shinken (真剣) | Moonlit Orchid Katana: TangGu (湯谷) Maru Blade (丸造) + TangGu (湯谷) Radenhana Koshirae (螺鈿花拵)

Tsuba (Handguard 鍔): Mokko-gata（木瓜鍔）brass tsuba with aged antique finish

Fuchi-Kashira (縁頭): Matching brass fittings featuring peony and lion carvings (牡丹獅子図)

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）

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

The black tone conveys strength

making it one of the most iconic lacquer styles in Japanese sword mounts