This is the other Japanese supermarket other than Mitsuwa. They seem to have done quiet well in spite of a bigger supermarket that opened down the street from them.
They carry most Japanese items and lots of fish for sushi. Prices are sometimes cheaper than Mitsuwa, service is a little better as well.
They have a niche in the Organic market as well, so if you have looking for organic veggies this is your place.
They send out a pamplet every week, so sign up for this when you are there, then you get to see all the things that go on special the following week.