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-10% Code SPRING until 14/06/2026

Kokuyami Katana Sword (黒闇) – Black Darkness

£215.00

T10 Steel High hardness and excellent cutting performance.
full tangBlade running through the entire handle for maximum strength.

Some blades don’t reflect light, they consume it. The Kokuyami katana sword (黒闇, “Black Darkness”) is forged using traditional swordsmith methods in T10 high-carbon steel, its deep black coating absorbing every trace of light around it. A skull tsuba with serrated edges, gray diamond-braided ito, and a demon-painted saya lacquered in ash gray: darkness, given form.

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Kokuyami Katana Sword (黒闇) – Black Darkness
Kokuyami Katana Sword (黒闇) – Black Darkness
£215.00

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Additional information

Blade Material: No selection

T10 Steel
Blade colour: No selection

Black
Scabbard (Saya 鞘): No selection

Gray lacquered wood with painted demons
Sageo (下げ緒): No selection

Gray
Handle (Tsuka 柄): No selection

Faux black stingray and wood
Tsuka-ITO (柄糸): No selection

Gray diamond
Menuki (目貫): No selection

Black dragon
Guard (Tsuba 鍔): No selection

Skull shape with serrated bottom
Fuchi (縁): No selection

Smooth black alloy
Kashira (頭): No selection

Smooth black alloy
Habaki (鎺): No selection

Silver
Blade length (cm): No selection

71
Overall length including handle (cm): No selection

103
Length with scabbard (cm): No selection

105
Handle length (cm): No selection

26.5
Blade thickness (cm): No selection

0.7
Blade width (cm): No selection

3.2
Weight (kg): No selection

1.25
Package weight (kg): No selection

1.55

Kokuyami Katana Sword: Where Darkness Becomes Steel

Its name is written in two kanji: 黒, black, and 闇, darkness. Together they form Kokuyami, a word that does not simply describe a color but invokes a primordial force, the silence before creation, the shadow that outlasts destruction. This is not a katana that asks for attention. It commands it. From the black blade body to the oni-painted scabbard, every surface of this Kokuyami katana sword carries the same uncompromising presence, a darkness made coherent, intentional, and strikingly beautiful.

Kokuyami Katana Sword (黒闇) – Black Darkness
Kokuyami Katana Sword (黒闇) – Black Darkness

Crafted for Those Who Prefer the Dark

The Kokuyami sword is built on classical katana geometry: shinogi-zukuri construction with a clean tori-zori curvature, a chū-kissaki tip balanced between aggression and control, and an iori-mune spine that follows centuries of refined Japanese form. The blade is forged using traditional swordsmith methods in T10 high-carbon steel, then subjected to a darkening treatment that transforms the entire blade surface into a deep, uniform black finish of striking visual intensity. The result is a blade presence so deliberate it reads less like a finish and more like a statement.

Traditional Craftsmanship, Uncompromising Quality

A katana is more than a sword, it’s a symbol of precision, discipline, and Japanese heritage. Our katanas are crafted with respect for traditional sword-making standards, offering you a reliable, durable, and beautifully finished blade. Whether you’re a beginner or an experienced collector, you’ll find the perfect katana for your needs.

Katana

Every Surface, One Vision

The Black Darkness aesthetic of the Kokuyami is not applied to one element and forgotten. It is executed across every component of the koshirae with rare visual discipline. The skull-motif iron tsuba features a custom organic silhouette, asymmetric and unsettling, with sukashi openwork cutouts at the eye-socket positions and a serrated sawtooth perimeter that evokes something ancient and dangerous. The matched black alloy fuchi and kashira frame a tsuka wrapped in a tight hineri-maki diamond pattern using cool gray braiding, with the black samegawa visible through each opening. At the junction of blade and handle, a silver-colored habaki adds a refined counterpoint, its clean metallic surface catching the light with quiet precision against the surrounding darkness. The menuki beneath the wrapping take the form of a black dragon, a creature of mystical force anchored precisely where the hands hold the blade.

The Saya That Carries the Legend

The scabbard of the Kokuyami katana is where the piece becomes something singular. Lacquered in deep black wood, it is covered with hand-applied sumi-e ink-wash artwork depicting oni and yokai, supernatural creatures drawn from the oldest layers of Japanese legend, rendered in grey, black, and white with the fluid authority of Japanese ink painting. Calligraphic characters accompany the figures, grounding the imagery in language as well as myth. This is not decorative surface treatment. It is a narrative painted directly onto the object, making every scabbard a unique expression of the same darkness the blade embodies. For the collector who understands that a katana is not merely a blade but a complete visual and philosophical object, the Kokuyami demands a place where it can be seen.

FAQ

We deliver in the United Kingdom.

We partner with UPS and EMS to provide you with reliable, high-quality shipping service.

Delivery is free on all orders placed on our site, with no minimum purchase required.

Once your order is validated, our team processes it within 24 business hours. Your order is then shipped within 1 to 15 business days. You will generally receive your package within 15 business days from your order date, though in some cases delivery may take up to 36 business days. Our katanas are forged by master swordsmiths in Longquan, China, a region with centuries of unrivalled blade-making heritage. Each katana is dispatched directly from our workshops, allowing us to deliver exceptional quality at an honest price. From the moment your order is placed, you will receive email updates so you can track your shipment every step of the way.

Every item undergoes rigorous quality checks before being shipped. Our team oversees each step of the process to ensure your order meets the highest standards.

If your package has not arrived within 36 business days from your order date, please contact us at contact@japanese-swords.co.uk and we will take care of it.

You have one hour after your order is confirmed to notify us of any address error by email. After this period, we cannot guarantee a correction. A misrouted package may result in incorrect delivery or a failed delivery attempt. We strongly encourage you to double-check your shipping information before confirming your order.

You have 30 days from receipt of your package to report a problem or request an exchange or refund. The item must be returned in its original, unused condition and will undergo a quality check. If the check is successful, the refund will be issued to your original payment method within a few business days.

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