Deep Sea Fang Katana – 深海牙刀

Hand-forged Deep Sea Fang Katana in T10 tool steel with authentic hamon, bo-hi groove, and mirror polish. Full tang, sharpened. Carved iron tsuba with gold accents, brass habaki, black cotton ito over genuine rayskin with blue menuki, deep navy lacquered saya with black cord wrapping at both ends. Includes wooden display stand with 武 (Bu) kanji. T10, genuine hamon, bo-hi, mirror polish, genuine rayskin — premium specs behind a deep-ocean aesthetic.

Deep Sea Fang Katana Specifications

T10 Steel — Mirror Polish, Hamon, Bo-Hi

The blade stacks three premium features. T10 tool steel at 60-62 HRC provides the hardness. A genuine hamon in midare pattern runs the cutting edge — the visible boundary between hard martensite and softer pearlite. A bo-hi (fuller groove) reduces weight and produces the tachikaze whistle. The mirror polish brings everything to the surface: hamon, engravings, and the steel's grain all visible under light. The Deep Sea Fang katana matches the spec sheet of our Kumo and Shirokuro — T10 with genuine hamon — and adds bo-hi and mirror polish on top.

Dark Dragon Engravings

Dark engravings run the blade near the habaki — dragon or sea serpent motifs rendered in gray-black tones against the mirror-polished steel. The dark-on-light approach inverts the typical white-on-dark engraving found on blades like the Gold Katana or Blue Sakura. On the Deep Sea Fang katana, the engravings look like shadows beneath water — forms visible but not fully defined, the darkness suggesting depth rather than surface decoration.

Navy Saya with Cord Wrapping

The saya is deep navy lacquer — darker than the Aozora Tanto's blue, darker than the Kumo's navy, approaching midnight. Black cord wrapping bands sit at the koiguchi and kojiri, creating textured accents that reference nautical rigging. The cord adds grip for drawing and visual contrast against the smooth lacquer. The saya reads as maritime — naval blue with rope-like binding, a blade that belongs near water.

Genuine Rayskin & Blue Menuki

Black cotton ito wraps over genuine rayskin (samegawa) — the natural nodular texture confirming authentic construction. Blue diamond-shaped menuki sit beneath the wrapping as the single color accent on the handle — small bright points evoking bioluminescent life in the deep ocean. The handle stays dark and minimal, letting the T10 blade and navy saya define the sword's identity.

Deep Sea Fang — Abyssal Power

The name references the fang of a sea dragon — Ryujin's domain, the abyssal zone where pressure crushes and sunlight never reaches. The Deep Sea Fang katana pairs with the Ryujin (3D dragon tsuba, stingray saya) and Seiryu Tanto (Azure Dragon, navy saya) for an ocean mythology lineup spanning katana and tanto. The T10 steel + genuine hamon ensures this isn't just a themed display piece — it cuts.

Display

Ships with a natural wood stand bearing 武 (Bu) kanji. The navy saya against warm wood creates a clean display. Pair with the Kumo (navy saya, hitatsura — different T10 approach) or the Aonami Wakizashi (blue wave pattern — ocean theme at wakizashi scale).

Frequently Asked Questions

Is the hamon genuine?

Yes. Authentic clay-tempered hamon — genuine differential hardening producing hard martensite edge and softer pearlite spine. Not machine-made or acid-etched.

Does the blade have both bo-hi and engravings?

Yes. The bo-hi groove runs the blade's length, and dark dragon engravings appear near the habaki. Both features coexist on the mirror-polished T10 surface.

Is this Deep Sea Fang katana sharp?

Yes. The T10 tool steel blade is hand-sharpened and functional. Handle with care, store in the saya, and check local regulations before ordering.

Is the rayskin genuine?

Yes. Genuine rayskin (samegawa) beneath the black cotton ito. The nodular texture is natural, not synthetic.

What is the cord wrapping on the saya?

Black cord bands wrap the saya at both ends (koiguchi and kojiri), creating textured nautical-style accents against the smooth navy lacquer. They add grip during draw and reinforce the maritime aesthetic.