Quote Originally Posted by sanjuro_ronin View Post
Using two swords was not unique to the Niten, many other systems used it and the TSKSR formalized it first, back in the 16th century...
Right. And Muso Gonnosuke, the founder of our Shinto Ryu was a student of TSKSR first, so it could be that his association with Musashi only reinforced the importance of one-handed swordsmanship rather than being the source. There is no tradition in our system of preferring a sword of any particular dimensions. You use what you have.

There was a period in Japanese history in which weapons morphed into ridiculously gigantic proportions with extra-long tsuka and blades. It is said to be indicative of a general loss of martial vigor in the country.