The blacksmith , Mr. Toshihiro Wakui is third generations of Wakui Prybar Cutlery Co. He had worked on Wakui Prybar Cutlery Co on day time, and had worked to Yoshikane on night time for four years to learn how to make cooking knives. He has worked his company Wakui full time after that.
This blade is thick on the spine (tapered spine to the tip) that works for cutting or split into the ingredient like an ax, and the tip side becomes thinner, and the thin tip makes easier to slice into the ingredient. To slice into the ingredient from the tip side to the heel side makes easier to cut into the ingredient, and it is easier to come off the ingredient from the blade without stuck on the blade. It is an ideal shape of the slicing kitchen knife. It is also wide tall blade on the heel side.