Very nice video thank you. My kinda guy....
I'm glad you like it.
Shimamoto is not from Tohei's lineage, but his aikido is on the softer side of the aikikai spectrum. He is a zen priest too, running the Shosenji temple in Toyonaka, Osaka prefecture. His dojo is located in the temple.
Some articles about him:
A few months before this seminar he had two thirds of his stomach removed. I was surprised to see how well he recovered.