Don't you think this Job was way overpowered?
There really is no actual reason to use stuff as Knight, Monk or Dragoon if you have this in your Job List.
If you're fairly rich, you can even buy Shurikens, which deal more damage than the Masamune - and they can be equipped in PAIRS!
FF5 did much better on this one, cuz even though Mimics are incredibly useful, they at least suffered from relatively low Status and stuff, but the Ninja is EXCESSIVELY powerful.