High-grade Wagyu are those that meet the above conditions and devise a fattening method for each region, or are raised with their own feed. Specifically, "Matsuzaka beef" from Mie prefecture, "Waou" from Kumamoto prefecture, etc.
One of the major characteristics of Japanese beef is the so-called "marbling", which is muscle meat that has fat (called sashimi) infiltrated like a mesh. The fine texture gives it a soft texture that melts in your mouth.