Marusho Industry Inc. debuted the Mcusta Zanmai brand at Shot Show in 2005. The Mcusta Zanmai kitchen knives are the apex of this fusion of traditional Japanese craftsmanship and cutting-edge technology. They are produced in Seki-City, Japan. The company that makes knives goes by the moniker Mcusta, which is short for Machine Custom Knives. Kitchen knives made by Mcusta Zanmai are meticulously hand polished and inspected by a group of professional craftsmen.