Hello Diamotsu,
I am sorry, but it's time for a few painful truths to help you understand why people are giving you such a hard time. First the truths ... you DON'T have a sensei in Okinawa. You DON'T have a "first don" in ninjutsu as your profile says you do. Shinobi shozuku are found in movies, anime, and those few "dojo" that teach made up "ninja" stuff to those silly suburban kids that believe that it's true. Most of those that post here are serious martial artists, and so have very little tolerance for any silly "ninja" playacting. Now for some good to attempt to offset what I just said ... there are some decent places that can teach skills that can be referred to as ninjutsu, although the organizations themselves don't refer to it that way. The Bujinkan and the Genbukan are two organizations that can do this, but the quality and knowledge of the instructor can vary widely from one dojo to another so a prospective student needs to be extremely careful. I used to include the Jinenkan along with the other two groups until they allowed one of their dojo cho to go on TV and hack up a side of beef (and poorly at that) as an entertainment side show. There are also many legitimate schools of the Japanese sword arts in the U.S., which wasn't the case only a decade or so ago.
So, if you'll tell us the area of the country in which you live, perhaps someone here can point you toward some legitimate instruction in the Japanese arts. And don't wear or play with your swords. Chances are very good that they are only meant for decoration, and so can be extremely dangerous if swung around.
Good luck!
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