Koi 濃い Katana – Manganese Steel, Ebony Saya, Iron Tsuba – view 1

Koi 濃い Katana – Manganese Steel, Ebony Saya, Iron Tsuba – view 2

Koi 濃い Katana – Manganese Steel, Ebony Saya, Iron Tsuba – view 3

Koi 濃い Katana – Manganese Steel, Ebony Saya, Iron Tsuba – view 4

Koi 濃い Katana – Manganese Steel, Ebony Saya, Iron Tsuba – hand-forged katana infographic

Koi 濃い Katana – Manganese Steel, Ebony Saya, Iron Tsuba – view 6

Koi 濃い Katana – Manganese Steel, Ebony Saya, Iron Tsuba – view 7

Koi 濃い Katana – Manganese Steel, Ebony Saya, Iron Tsuba – view 8

Koi 濃い Katana – Manganese Steel, Ebony Saya, Iron Tsuba – view 9

Koi 濃い Katana – Manganese Steel, Ebony Saya, Iron Tsuba – view 10

30,000+ Satisfied Customers

Koi 濃い Katana – Manganese Steel, Ebony Saya, Iron Tsuba

€305,95 €763,95

Free secured delivery, insured against theft and breakage. Duties and VAT included.

MANGANESE STEEL|FULL TANG

No.1 brand in the UK
Hand-forged, not machined
No customs fees

Sharpening: Unsharpened

Unsharpened

Engraving: No engraving

No engraving
With engraving (+£29)

Product variants

30-DAY MONEY-BACK GUARANTEE

Rated 4.8/5By thousands of customers

Free DeliveryOn every order in the UK

HandmadeBy our own swordsmiths

30-Day ReturnsChange of mind included

Description and specifications

SPECIFICATIONS

Blade colour	Natural steel
Material	Manganese steel
Guard (tsuba 鍔)	Sculpted iron
Scabbard (saya 鞘)	Ebony wood and bull-horn kurigata with cord
Handle (tsuka 柄)	Genuine rayskin leather Iron menuki set 2 bamboo mekugi

DIMENSIONS

Overall length (with saya)	103 cm (40.6 in)
Blade length	71 cm (28.0 in)
Blade thickness	0.75 cm (0.3 in)
Handle (tsuka) length	26 cm (10.2 in)
Blade width	3.2 cm (1.3 in)

The Katana Koi 濃い is a tribute to the depth and subtlety of traditional Japanese craftsmanship. Its name, evoking intensity and richness, is reflected in every aspect of its design and its high-quality materials.

Blade (刀身): The blade is forged in manganese steel, known for its durability. The natural colour of the steel adds an element of authenticity, underlining the purity of the metal and the mastery of the forging.

Guard (tsuba 鍔): The sculpted iron guard is a work of art, often depicting elements of nature or scenes from Japanese history. It is a feature that never fails to prompt conversation and admiration.

Scabbard (saya 鞘): Made of ebony, the saya is both sturdy and elegant. The bull-horn kurigata, finished with a sophisticated cord, shows the attention paid to detail and the commitment to quality and aesthetics.

Handle (tsuka 柄): The genuine rayskin leather gives a comfortable grip and a rich texture that contrasts pleasantly with the simplicity of the blade.

This Katana Koi is more than a collector's item or a practice tool: it is an extension of the practitioner, a link with the past and an expression of Japanese art craftsmanship.

Buying a sword in the UK

Sold only to adults aged 18 and over. Curved swords with a blade of 50 cm or more are hand-forged using traditional methods, as required by the Criminal Justice Act 1988 (Offensive Weapons) Order as amended in 2008.

Carrying a bladed article in a public place without good reason is an offence. Transport your sword wrapped, and only for a legitimate purpose (dojo, re-enactment, collection). Rules may differ in Scotland.

Care

Wipe the blade after every handling with a soft cloth; never touch it with bare fingers.
Apply a thin film of oil every few weeks to prevent rust.
Store it horizontally in its saya, edge up, away from damp.
Use only on suitable practice targets (rolled tatami mats, bamboo); never strike hard objects.

Read our full care guide.

Delivery, returns and age check

Free UK delivery, duties and import VAT included: nothing to pay on delivery. 1–3 working days to prepare, then 5–15 working days delivery.

18+, signed for: the carrier checks the buyer’s photo ID (passport or UK driving licence) and takes a signature. Parcels cannot be left with a neighbour or in a safe place.

30-day returns on unused swords in their original packaging. Engraved swords cannot be returned for a change of mind but are fully covered if faulty. Delivery · Returns · Terms of sale

Koi 濃い Katana – Manganese Steel, Ebony Saya, Iron Tsuba

Unsharpened / No engraving

€305,95 €763,95

Customer reviews

4.8 12 reviews

Reviews left by customers of our previous French store, translated from French.

Laurent L.

It is magnificent. Super sharp. Beautiful finishes and solid. I'm a fan 🤩 It makes you want another one.

14 Jan 2026

Luca M.

The katana is very pretty and of good quality. Matches the description. Very well packaged. I'm very satisfied with my purchase. However, the delivery time was long.

15 Dec 2025

Valérie L.

The sword is superb. Very beautiful finish. A surprise all the same: a very pretty delivery pouch, but we thought the wooden stand was included. Which is not the case. You also have to add customs fees that are not announced at the start, approx. 18€.

18 Jan 2024

Michel M.

A very well made, balanced, powerful katana, obtained quickly. It should not be altered in 6 centuries when archaeologists dig through the rubble of what was my house after the 3rd World War. Only this katana will remain, as a challenge to time and to the stupid values of modern-day conflicts.

28 Sep 2023

Thomas M.

Incredible quality! It is magnificent and cuts well! I had some small customs fees but nothing serious. Thank you very much! I recommend!!!

21 Aug 2023

Jeanne-marie C.

Excellent purchase, the katana is splendid. Plus, you have a very attentive service and team. If I had to buy another, it would be without hesitation with you!!! Thank you.

8 Feb 2023

Maurice P.

Beautiful horimono and temper line. A good katana, affordable in price.

7 Aug 2026

Pat L.

A lot of blockages at customs....the first time I waited 3 months....this time it was better but a lack of coordination with the carrier Very beautiful product certainly another order for a Christmas

14 Jun 2026

Christian C.

Shame that delivery took two months! Otherwise very beautiful finish.

31 Jan 2026

Julien S.

Thank you, order placed and delivered 1 month later.

16 May 2025

Simeo F.

Very beautiful katana. Mine was delighted. Thank you very much.

23 Jan 2023

Nicolas J.

Good.

23 Nov 2022

Why Tetsuren

	Tetsuren	Others
Highest-quality steels
Hand-forged by artisans
Full tang
No hidden fees on delivery
30-day money-back guarantee
Support from katana experts

Katanas of the highest quality

Every Tetsuren katana is forged, tempered and polished by hand by specialist smiths, in high-carbon T10, 1095 or 1060 steel or folded Damascus, always with a full tang.

Each sword is checked before it leaves the workshop, then delivered free across the UK with duties included.