The odachi sword is a legendary Japanese greatsword, closely related to the nodachi, known for its impressive length and dramatic appearance. Traditionally used by samurai in open combat, the odachi often features a blade over three feet long, making it effective for powerful slashing attacks. Its size required it to be carried on the back or drawn with special techniques. Today, the odachi is a symbol of martial skill and honor, admired by collectors and enthusiasts of historical Japanese weaponry.