Hi John,
Okazaki was famous for being a healer, he practiced a very very very painful but effective form of "massage" and body manipulation. I believe his son still has a clinic on Oahu. This ain't your pleasant, relaxation massage. It involves sinking onto nerve centers, and beating the hell out of muscle bodies. It hurts like hell, but is very effective for certain kinds of problems.
There is a book on the market now, about Lua, I just read it but can't remember the title nor the authors. The book was authored by four men who were students of a teacher in the 1980s, who has since passed away. The book includes a geneology, and Henry Okazaki was named as a teacher of the man who was the teacher of the book's authors. So it seems to me that Danzan ryu has influenced modern Lua, and quite possibly the other way around as well.
My kenpo teacher also studied under Seig Kufferath, who was a student of Okazaki, and learned his healing method from him. I have in turn been learning this method as well. It seems that the healing arts have been largely lost in the martial arts world. But it should still be alive in the Danzan Ryu lineages. I bet if you have access to a good DZR teacher, or better yet, Okazaki's son, you are in a position to learn these methods as well. I suggest you look into it. I think it's an opportunity to learn something that most people ignore.