Slightly OT, but confirms earlier statements...

Ninja did have a weapon called the Ninja-to, yes it was longer than a wakizashi and shorter than a katana, and it has a straight blade. Also, the sheath has more of a box (flat) shape than the katana sheath's rounded form. I've owned cheap-ass versions of all three, and looked into the weapons. It's amazing what interests growing up on Final Fantasy and Dungeons and Dragons can spawn in your mind, and where these interests can lead your studies ^_^

And yeah, Sephi carries his Masamune around with him. Cos he's a bad-ass. Mrawr.