Jewel Of The Spirit Smith :
When playing the 5th phase of the path of the Master Ninja in Mission mode, the one where you fight Murai, walk to the left end corner of the dojo and smash the vase. In the aura there will be a Jewel of the Spirit Smith, which you can use to upgrade one of your weapons.
Note: It is recommended to upgrade the Dragon Sword, as this is the strongest weapon available. |