Rice is not the end-all and be-all of food?!
Rice is to Nihon, as Bread is to Europe, as Steak is to USA.
When you think the word "Food" in your head, there is a thing that pops up in your head; for most people in different areas, these are the standards.
(Please note: I said "most;" your mileage may vary)
An example...
... for me, as an American, whe i hear "food," I think of a T-bone Steak... but if I could only eat one thing, one foodstuff, for the rest of my life? It'd absolutely be Rice (with butter); my parents both lived in Japan for years, and I grew up eating rice 4 days a week, and steak every Sunday.
So I get the Japanese Rice thing; I'm just glad they haven't done the thing where they kill a wolf and eat it, claiming it's "sugoi!"
Stop having Isekai eat dogs; eating dogs is bad!