Like most karate kata, Unshu's origins are likely traceable back to China (Sells, Unante; ISBN 0910704961). The most common of today'sversions are derived from Aragaki (Arakaki) Seisho who lived in Okinawa from the mid-1800s, to the early 1800s .
The Shotokan "Nijushiho" version is a derivative of the Shito-ryu version, in a similar manner to the heaian kata having been passed to Funakoshi by Mabuni (however in this case Nakyama sensei played a key role in its transmission from Mabuni to Funakoshi sensei).
The kata is performed by Jason Armstrong, 7th dan
support through Renshi Jason Griffiths (5th Dan) to add Shotokan & Okinawan commentary to the Shito-ryu form/bunkai. Its heritage is covered and the video demonstrates the kata
full power, walk through and bunkai