I have a sujihiki, that I have never used. It is different than the gyuto,
it doesn't have spinal taper at all, different knife for a different use.
A short funny story about it, I asked Koki if Master Nagao can send me a photo of himself with it.
Koki replied that many had asked autographs on the box or photos, but Master never does that.
I replied with a mail, as to why I understand it and respect it, based on my grandmother and father, a little older and a little younger than Master's age. They were both doing artistic jobs, but their seriousness dictated only photos of their products. They accepted photos only with family and staff..
And some extra things about people of that generation.
I don't know if my mail moved the Master, or Koki did his best, or a little of both, but suddenly, I got the photo [emoji173]️