Over the life of this forum, and under different topics - links have have been made to a Japanese blog -
郡上のテンカラ竿 ( 釣り ) - 長良川と郡上竿の世界
[ Gujo Tenkara Rod (Fishing)- Nagara River and Gujo Rod’s World] -
That had a wonderfel series of blog post about historic rods, lines, hook, kebari, fishing methods, culture, etc. Todoroki-san also frequently references information from that website.
Formerly it was on a yahoo server, you may recognize part of the URL - fk3yi8anpontan/ .
But I just discovered if I click on the old web address, found in an internet search-- I am taken to a Yahoo information page that states the blog was closed at the end of Dec 15, 2019.
http://blogs.yahoo.co.jp/fk3yi8anpontan/
While I could be mistaken - It appears the owner of that blog has moved to an ameblo server
New blog name ;
長良川と郡上竿の世界 ディープな世界にようこそ
Nagara River and Gujo Rod’s World Welcome to the deep world
New website , but notice it still retains fk3yi8anpontan/ in the URL :
https://ameblo.jp/fk3yi8anpontan/
The content from the former blog location appears to have been transferred to the new blog server, (though I did see a few lost images), as can be seen in this May 2019 blog entry:
郡上竿でテンカラ釣り Tenkara fishing with Gujo rod
https://ameblo.jp/fk3yi8anpontan/entry-12507764023.html
Internet searches will still turn up links to the old blog address on Yahoo, but the same content appears to be available on the new server. I probably never noticed it before because when I saw an image that looked like it might be from that blog, I never looked at the server name, I only looked at the " fk3yi8anpontan/ " part of the URL to recognize what blog it was. Anyway, that author frequent uploads a series of post on fun topics, if you like that sort of thing. And I see Todoroki-san and Mangetu-san, both members of this forum, are linked to on the blog.
Mangetu’s blog - if you haven’t see it before, it seems fairly new, not a lot entries thus far, and I haven’t yet quite figured out the best way to navigate it, here is one entry from a few days ago :