TOSA Cutlery is an extremely practical cutting device created by fusion methodology, which originated from SAMURAI sword making techniques brought to Tosa district in Kamakura Period* and later handed down and modernized by mixing with local smithery expertise. While SAMURAI swords were seldom used in actual warfare, TOSA Cutleries have been used and evolved in daily work. It wears out in the harsh environment where real durability and sharpness is needed. TOSA Cutlery never decorates the rooms. Even though it is stained with mud and is exposed to wind and rain, it still plays a role to help people cut something to make daily life easy. It is a tool to support human's life. Its unique progress still continues...