I found the Tenkaraenso blog post about Hiromichi Fuji and his book Modern Tenkara a fun read. Maybe you will too.
http://tenkaraenso.blogspot.com/2015/01/modern-tenkara-book-by-horimichi-fuji.html
I was aware he is credited with the design of some of the Nissin tenkara rods. I did not know he also ties the Nissin kebari and also makes their furled lines.
D