Ask a Wallingford or Fremont resident about sushi, and you're sure to hear about Musashi's. It's not the best sushi in Seattle by a long shot, but it's fresh, plentiful and remarkably cheap (a nigiri plate, enough for dinner, is $10, and pieces are $2-$3). The selection is somewhat limited, but the standards -- salmon, tuna, yellowtail, shrimp and California roll -- are all there.
We're also fond of the special bento dinner ($10), a remarkable assemblage of steak, chicken, several kinds of raw and cooked fish, grilled vegetables and rice. Prefaced with a bowl of miso soup and hot tea from the thermos on the table, it's a tasty and filling dinner at a great price.
Musashi's does a lot of take-out business; dining in is casual, at small tables in a room papered with posters for upcoming events in the city. Service is good but the tiny kitchen can get backlogged, leading to long waits at times.