Koutetsu Knives by Takayuki Shibata
In my kitchen I was using a gyuto knife. It was a beautiful knife. But it was a little too curved for my liking. Didn't make enough contact with the food. So I switched to a straight-edged nakiri. Better for chopping vegetables. But when I was cutting meat, then I wanted to go back to my gyuto. Hmm, I thought. Somebody should make a new type of knife, one that falls between a gyuto and a nakiri. And then, as I am a knife maker, I thought that I should make it. So I did.
I gave it a slightly curved edge. Too-straight produces too much friction. Too-curved reduces contact with the food. This slight curve is my attempt at a happy medium.
I also gave it a sharp point. This is very nice for scoring vegetables, or squid, or chicken.
The spine of the knife has a very high mirror-polish. This maximizes friction between your fingers and the blade, for better control, comfort, and safety.
The sides of the knife have a rough finish, to minimize friction between the food and the blade. This is especially noticeable with foods that have a high water content. My knife's rough sides break up the water's surface tension, allowing the blade to slide through more easily.