Aoi Series Knife Set

$294.95

$294.95 $985.00

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Forged by hand in Seki, Japan

60-Day Money-Back Guarantee

Lifetime Warranty Guarantee

Free Express shipping within the USA

Only 3 left in stock · 29 sold today

Order within 00:00:00 ships same-day

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Aiko TanakaKaiseki Aiko · Tokyo, Japan
Marco De LucaOsteria Vesuvio · Naples, Italy
Kosei YamamotoRyotei Moto · Kyoto, Japan
Yoko TakahashiThe Fair · Chicago, USA

The Aoi Series is a matched cutlery collection handmade to a single standard in Seki, Japan, so every blade you choose shares the same steel, the same finish, and the same handle. Build the set around how you actually cook. The Gyuto is the workhorse chef's knife for proteins, large vegetables, and everyday prep. The Santoku handles fast, controlled slicing, dicing, and mincing with a flatter edge profile. The Nakiri is a straight-edged vegetable specialist built for clean push cuts and full-contact board work. The Cleaver powers through dense produce, squash, and other firm vegetables. The Petty covers detail work, peeling, trimming, and small in-hand cuts where a full-size blade is too much. Each knife runs a VG-10 cutting core wrapped in 67-layer suminagashi Damascus, heat-treated to 60 ±2 HRC for a hard, lasting edge backed by tougher outer layers. The high-contrast suminagashi finish carries across the collection, and every handle is shaped in the Japanese wa style from sapphire-blue resin and stabilized burl wood for a consistent, balanced grip throughout the set.

Features

Matched from one forge: every knife in the collection shares the same VG-10 core, 67-layer suminagashi Damascus, and wa handle, so the set looks and performs as one.
VG-10 cutting core hardened to 60 ±2 HRC for a sharp, edge-retentive blade, with 67 Damascus layers adding strength and reducing food drag.
High-contrast suminagashi Damascus finish runs consistently across each blade for a unified look on the block and in hand.
Sapphire-blue resin and stabilized burl wood wa handles deliver a secure, balanced grip and the same feel from knife to knife.
Role-built lineup covers the full board: Gyuto for everyday work, Santoku for fast slicing, Nakiri for vegetables, Cleaver for firm vegetables and squash, and Petty for detail tasks.
Build the set you need: add only the blades that match your cooking instead of paying for knives you will not use.

Build your Aoi Series: choose from the Gyuto, Santoku, Nakiri, Cleaver, and Petty, all matched in VG-10 suminagashi Damascus with sapphire-blue resin and burl wood wa handles.

Backed by a lifetime warranty against defects and a 30-day return. Dispatched free and fast from our US storefront.

Blade length	Multiple (see knives)
Steel	VG-10 cutting core, 67-layer suminagashi Damascus
Blade finish	67-layer suminagashi Damascus (high-contrast)
Hardness	60 ±2 HRC
Handle	Sapphire-blue resin & stabilized burl wood (wa)
Weight	Varies by configuration
Edge angle	Honbazuke hand-honed, ~15° per side
Origin	Handmade in Seki, Japan
Warranty	Lifetime warranty against defects · 60-day returns
Care	Hand wash and dry immediately, hone regularly, never dishwasher

Shipping. Every MASAHIRA knife ships free, with no minimum order, sent fast by FedEx Express within the USA. Orders leave our US storefront within one business day and most arrive within 2 to 5 business days, with tracking emailed to you. Each blade is handmade in Seki, Japan, then held and dispatched from inside the US, so it reaches you quickly with no customs fees or surprises.

Returns. 60-day money-back guarantee. If the knife is not right for you within 60 days, return it for a full refund. No restocking fees and no questions asked. Email info@masahira.com to start a return. You cover return shipping back to us, and your refund is issued to your original payment method as soon as the knife arrives. Anything that reaches you damaged or flawed, we replace at no cost.

Every MASAHIRA blade is forged by hand and guaranteed for life against defects in materials and craftsmanship. If a fault ever shows in the steel, the edge, or the construction, we repair or replace it.

It does not stop there. Every knife also comes with free sharpening for life. When the edge eventually softens with everyday use, send it back and we restore it to factory sharpness at no charge, so your knife cuts like new for as long as you own it.

The defect warranty covers manufacturing faults under normal kitchen use. It does not cover ordinary wear, rust from improper drying, accidental damage, misuse such as cutting bone or frozen food, or dishwasher damage. To make a claim or arrange a sharpening, email info@masahira.com with your order number and a photo, and we will make it right.

Hand wash, never the dishwasher. Wash the blade by hand with warm water and a little soap, then dry it straight away with a soft cloth. The dishwasher dulls the edge and damages the handle.

Cut on wood or plastic. Use a wooden or plastic board. Glass, stone, granite, and ceramic will chip a fine edge.

Hone often, sharpen rarely. A few passes on a honing rod every week or two keeps the edge true. When it finally needs sharpening, a whetstone restores it, or send it to us for free sharpening.

Store it safely. Keep the knife on a magnetic strip, in a saya, or in a block, not loose in a drawer where the edge can knock against other tools.

Keep it dry. Never leave the knife to soak or sit wet in the sink. A drop of food-safe oil before long storage protects both the steel and the Damascus pattern.

Verified

Sharpest blade I've ever felt

I have handled plenty of knives over the years and none came close to this out of the box. It slipped through a ripe tomato under its own weight, genuinely the sharpest thing I have ever felt.

Greg P., 1 day ago

Verified

Almost didn't risk it

Buying a knife I couldn't hold first made me nervous. It arrived better made than blades I have paid double for, and far sharper than I expected.

Hannah R., 3 days ago

Verified

Sharper than my Wüsthof

Cooked with a Wüsthof for fifteen years and thought nothing would top it. It arrived sharper and lighter, and is quietly my everyday knife now.

Daniel R., 6 days ago

Verified

Still sharp months on

I was sure it would dull like my old set, the way they always do. Eight months of daily use later, honed just once, it still glides through a tomato.

Marcus T., 1 week ago

Verified

Best gift I've given

Bought it for my husband and feared it would feel cheap. The Damascus is stunning, the box got a gasp, and he will not stop talking about it.

Elena V., 1 week ago

Verified

It really is that sharp

I rolled my eyes at the Japanese-steel claims, then put it to work. Six weeks in a busy kitchen with fish and onions, it is still frighteningly sharp.

Diego M., 2 weeks ago

Verified

Arrived fast and safe

I was wary of ordering a blade online, sight unseen. It shipped from the US in just three days, sealed in a guard, and arrived without a scratch.

Tom B., 2 weeks ago

Verified

Effortless in the hand

I have small hands and feared it would feel clumsy. It is far lighter and better balanced than my old chef's knife, so sharp I nicked myself day one.

Sofia L., 3 weeks ago

Rated 4.8/5 from 3,500+ reviews. Recent 5-star reviews from MASAHIRA customers.

A note from the forge

Three generations have kept the same fire in Seki. Every blade is folded and finished by hand, the way my grandfather taught me. Made for real kitchens, not glass cases.

Handmade in Seki, Japan

Sharper, lighter, built to last a lifetime.

Scary-sharp from the first cut

Ground over a hardened VG-10 core to a keen 12–15° edge that glides from the first cut. No breaking in, no struggle.

Light and perfectly balanced

A thin blade and full-tang handle, balanced at the bolster and lighter than any German knife, so it stays comfortable through long prep.

Holds its edge, guaranteed for life

San-mai forged to about 60 HRC, so it holds its edge for weeks of daily use. Backed by a lifetime warranty and free sharpening.

The MASAHIRA Difference

Every MASAHIRA blade is hand forged to outcut, outlast, and outclass the ordinary knives sitting in your drawer.

Ordinary Knives

Steel & Core

67-layer Damascus folded around a hardened VG-10 core, rated 60+ HRC.

Soft single-piece stainless that bends, chips and dulls.

Blade Sharpness

Hand-honed to a keen 15° edge that glides through fish and herbs.

Blunt 25° factory grind that crushes and tears.

Balance & Feel

Balanced for nimble control and comfortable through long prep.

Handle-heavy stamped blades that tire your hand fast.

Edge Retention

Holds its razor edge for months between sharpenings.

Dulls within weeks and needs constant resharpening.

Craft & Origin

Forged, finished and inspected by hand in Seki, Japan.

Mass-produced on automated lines, never hand-finished.

Lifetime Guarantee

Protected for life against any defect. A blade you keep forever.

Limited cover at best, and rarely honored.

WHERE THE EDGE IS BORN

For seven hundred years the city of Seki has forged the blades of Japan, from the swords of samurai to the one blade every kitchen still needs. For one hundred of those years, three generations of the Masahira forge have hammered their seal into the steel.

Now Master Toshiro Masahira, sixty-eight and the last of his line, is releasing his blades direct from the forge for the first time in a century. The price of a working knife, not a collector's trophy. His one wish: that a Masahira blade ends up in a real kitchen, in working hands.

Razor-sharp out of the box

Made to last a lifetime.

Warranty Guarantee

Real cooks.
Real kitchens.

Frequently Asked Questions

Every MASAHIRA blade is made in Seki, the city in Gifu that has forged Japan's blades for seven hundred years, from samurai swords to the knife in your kitchen. Each one carries the seal of the Masahira forge, founded in 1924 and now in its third generation under master bladesmith Toshiro Masahira, a certified Traditional Craftsman. For the first time in a hundred years he is releasing his blades directly from the forge, with no gallery and no dealer in between.

Real. The pattern is not printed or etched on. It is 67 actual layers of steel, folded and forge-welded around a hardened VG-10 cutting core, then hand-finished in Seki so the flowing suminagashi grain runs all the way through the blade. No two are identical, because the pattern is in the steel itself.

Razor sharp and ready to cook. Each blade is hand-honed to a 12 to 15 degree edge before it leaves Seki, far finer than a typical Western knife, so it glides through tomatoes, fish and herbs from the very first cut. No breaking in, no setup.

It holds. The VG-10 core is hardened to 60 to 62 HRC, harder than the soft stainless used in most store-bought knives, which is why it keeps its edge for months of regular use rather than weeks. A few passes on a honing rod keeps it aligned between sharpenings.

You never pay to keep it sharp. When the edge finally needs work, send the knife back and we sharpen it for free, for as long as you own it. With normal home use most owners only need this about once a year.

Start with the Chef knife (Gyuto) or the Santoku for everyday work, both handle almost everything. Add the Nakiri for vegetables and the Kiritsuke for clean, precise slicing. If you want the full kit, the matched set shares the same steel, finish and handle across every blade and is the easiest way to build a complete block over time.

Hand wash with warm water and dry it right after use, and store it on a magnetic strip or in a guard rather than loose in a drawer. Keep it out of the dishwasher, where heat and detergent dull the edge and damage the handle. Use it on wood or soft plastic, never glass, stone or ceramic.

Shipping is free on every order. Your knife ships from our US storefront, not from overseas, and leaves within one business day. Most orders arrive in 2 to 5 days, and tracking is emailed the moment yours is on its way.

Cook with it and put it to work. If it is not for you, return it within 60 days for a full refund, with no restocking fee. We would rather you use the knife and be sure than keep one that does not fit your hand.

Every blade is guaranteed for life against manufacturing defects in the steel, the edge and the handle. It does not cover normal wear or damage from misuse, such as cutting bone or frozen food, prying, or running the knife through a dishwasher. If a blade ever fails on our end, we replace it.

Because it comes straight from the forge. A blade like this normally passes through an importer, a distributor and a shop, each adding margin before it reaches you. We send it directly from the Masahira forge to your kitchen, so you pay for the steel and the craft, not everyone's markup in between.

One of the best. Each knife arrives in protective packaging ready to give, and a blade like this gets used for decades instead of forgotten in a drawer. It is covered by the same lifetime guarantee and free sharpening even as a gift, with no receipt needed, so whoever receives it is looked after for good.