Japanese premium blade manufacturer founded in 1955 by Hidetaro Okada in Tokyo. Almost exclusively produces handcrafted blades using 300-400-year-old Kiso Hinoki (Japanese cypress) in their Yokohama factory. Each blade is made individually by artisans with decades of experience, not mass-produced. Product lines include the signature Speed series and multi-ply blades incorporating Doroyanagi wood from Hokkaido and high-tech fibers like Izanas (Japanese super-strong polyethylene). The century-old Kiso Hinoki provides a unique feel prized by connoisseurs. Targets advanced players valuing craftsmanship.