The Only Sword in the World

With the death of the current swordsmanship master, it is difficult for swordsmen in the world to improve, and the era of swordsmanship has come to an end. But when a man from another world who is one with the swordsmanship master is born on this land, how will he stir up the wind and clouds, compete with the heroes of the world, and whether a hundred years can dilute the blood feud.