Larry:

My son lives in Japan. He says that they make a knife that will cut sushi precisely and paper thin. They use a steel called honyaki.

It is ground and honed like you are describing. He says they are pricey but they will slice thin and straight. Check it out.

https://en.m.wikipedia.org/wiki/Honyaki

Coach
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"Filet that fish? Hell naw! I'll scale him, gut him, fry him up in grease, take him by the head and tail, and play him like a French Harp!" - Uncle Paul sometime in the 60s.