Since the time of Crusades in the medieval Europe, Damascus steel has been valued in European countries for its strength, beauty, and rust resistance. The characteristics of Damascus steel have been restored in this Sekiryu knife, including easy sharpening and rust resistance. We achieved the sharp edge using special techniques by laminating each of the 16 layers of soft and hard steel iron alternately on both surfaces with VG-10 steel to make the 33-layer structure. In addition, Ohzawa original forging techniques and the “yakiire” hardening process produce a clear cut and excellent sustainability, while ensuring usability.