As often happens, when we are looking for one thing, we come across another.
As I learned from Don Rabska years ago, there is a common thread that runs through styles of archery, some more closely related than others. Learning those similarities and differences can help in building a better base for your own practice.
I’m leaving the link I located for you to check out and glean anything you can. It leads to a thread in Archery Talk on “Understanding Expansion”.
https://www.archerytalk.com/threads/understanding-expansion.6023106/page-3#post-1113894099
I’d like to revisit the subject at a later date. It should be interesting to see if the commenters have a clear understanding of Kyudo. In the meantime, I welcome your input and sharing your understanding of the subject.
(Now I go back in search of where I was headed before the diversion and hope I make it back here before too many more side trips.)
JM
Kyudo ...the road less traveled 