The Origins of Japanese Knives

  • The story of Japanese knives begins with the sword.

    From ancient blades preserved in Nara to the samurai era, swordsmiths carried their artistry into the kitchen. When peace in the Edo period reduced the need for weapons, many smiths reinvented themselves, transforming the spirit of the katana into tools for chefs. This gave birth to iconic knives such as the deba, usuba, and yanagiba—each created with precision and purpose.

    Regional cuisines shaped unique designs: the square-tipped usuba of Tokyo, the curved kamagata usuba of Kyoto, the long yanagiba of Osaka, and the tako-biki for firmer fish. Each blade reflects local food culture and philosophy.

    The Meiji Restoration’s sword ban forced smiths once again to adapt, turning their mastery toward kitchen knives. From that challenge grew industries that continue today, blending tradition with innovation.

    Now celebrated worldwide, Japanese knives embody sharpness, respect for ingredients, and centuries of craftsmanship. To hold one is to carry the soul of the sword, reimagined for the art of cooking.

Our Story

  • Tradition of Sakai, in Your Hands

    "Where can I find a truly great knife?"
    We started KIREAJI to answer that question. While the number of skilled craftsmen is declining in Japan, many people overseas are seeking authentic blades. With that in mind, we carefully deliver each knife—bridging tradition and kitchens around the world.