Koi here reads as deep — depth and richness, the quiet intensity of something done properly rather than loudly. This entry-level katana takes that to heart: no gilding, no theatre, just the natural color of good steel and traditional fittings, a piece that celebrates the depth of Japanese craft without shouting about it.
Forging & Steel
The blade is manganese steel kept in its natural color — no coloured finish, just the bare metal. Manganese steel is prized for hardness and wear resistance, so the Koi takes and holds a sharp edge through handling and practice. It is built as both a collector’s piece and a functional tool: an honest entry-level workhorse rather than a display-only ornament. Left in natural steel, the blade also keeps maintenance straightforward — a wipe of oil and it is ready for the next session.
Fittings
The furniture is traditional and solid. The tsuba is sculpted iron, the saya is ebony wood with a bull-horn kurigata and cord, and the tsuka is wrapped in genuine stingray leather over an iron menuki set, pinned with two bamboo mekugi. It is a classic, understated mounting that matches the bare-steel blade — function and quiet good taste over flash.
Specifications
| Component | Detail |
|---|---|
| Blade steel | Manganese steel |
| Blade colour | Natural steel |
| Tsuba | Sculpted iron |
| Saya | Ebony wood, bull-horn kurigata, cord |
| Tsuka | Genuine stingray leather, iron menuki set, 2 bamboo mekugi |
Dimensions
| Measurement | Value |
|---|---|
| Total length | 103 cm |
| Blade length | 71 cm |
| Handle length | 26 cm |
| Blade thickness | 0.75 cm |
| Blade width | 3.2 cm |
Is it battle-ready?
The Koi is marketed as both a collector’s piece and a functional tool. The hard manganese blade keeps a sharp edge well, suiting it to handling and controlled practice, while the traditional iron-and-ebony mounting makes it a clean display piece. Browse the full katana collection, the blue Katana Koori, or the refined Katana Ōku.
Verified owner
Definitely worth the wait. I thought it’d be lighter, but it’s just the perfect weight for anyone wanting to train and build strength.
It arrived in about two weeks. I live in Sweden so I’m not sure if that makes a difference. I was really happy with my purchase, it was packed and protected well. I’d definitely recommend Katana Sword!
For the price it’s honestly not bad, but I picked the “unsharpened” option and it showed up sharp, so that’s a bit awkward to handle.
Bought it for my husband as a Christmas gift and he LOVES it. Took a little while to ship to Sweden, but that’s understandable. Just make sure you order it a month or so ahead if it’s meant to be a present.
I got this as a Christmas gift for my girlfriend and she absolutely loved it. The quality of the sword, the scabbard, and the delivery all went beyond my expectations, and I’m really happy with the whole experience.