>>/56880/
That's fucking crazy.  My sensei explicitly didn't allow that, he told us to buy it, and if we couldn't buy it MAKE IT (print it from the library, but still).
And you're IN Japan, how did they let that fly?
IT IS!  Most skills are.  I'll start writing you letters and snail mail'n em.
If that's true, you got big competition, good luck :^)