Location : First, get the Rusty Sword . This can be found just outside of the Cavern of the Stolen Fayth, to the east and at the end of the path. Take it, then return to the airship and fly to the Djose Highroad, then go to the entrance of the Mushroom Rock Road area. Go north at the first fork - remember, the first time you came here, you were blocked from coming this way. Go north and along to find an elevator to ride to a statue of Lord Mi’ihen, which you can examine to get the Rusty Sword transformed into the Masamune.