Carbon Knife Company has a Shibata Kotetsu Bunka in stock, FYI. If you are looking for a lasery Bunka, you'd be hard pressed to do much better. Mine is one of my favorite all time knives.Thanks but its impossible to find in stock those knifes.
https://carbonknifeco.com/collections/shibata-knives/products/shibata-kotetsu-bunka-175mm