I sent the same post to a Kitchen knife forum that most of them live and breath Japanese knives.
This is what I found out from a member:
Thought many of you might like to know yourselves.
Quote:
Ikkaku-saku Donryu made by Shimizu Hamono Kougyousho in Seki. (not the one in Echizen, Fukui)
They are less known company and usually don't do expensive super-steel ones, and centered more on home-use Toginon line and affordable industrial workhorse knives, but mostly well trusted I think.
Current models have plastic handles so the pictured one is 15-30 years old maybe?
Yep, the reading is donryu, not nomi-ryu. Meaning swallowing/devouring dragon.