This is an elegant sushi counter, frequented by locals, offering reasonably priced set meals. In winter you can sample local crab sourced from Tsuiyama harbour, just 10 minutes away, in a variety of ways, from kani-nigiri (crab sushi; ¥2200) to a full-on crab feast (from ¥20,000 per person).
It's between Ichi-no-yu and Gosho-no-yu onsen, on the opposite side of the street, with a small, illuminated white sign with the kanji for sushi (鮨).