I’m curious if anyone has an answer why the Masaaki Ryu is not listed as one of the systems within the X-kans. It is my understanding that the training of the kusari fundo found in the X-kanscomes from Masaaki Ryu. Is this true? If so, why is it not part of the ryuhalisted when the systems studied are mentioned? Is that Hatsumi is not Soke of thatart? Is it that adding it would make thenumber of arts in the system 10 as opposed to 9 which I believe is a number of significance in Japanese culture? What are your thoughts?