This is one of my favorite places in Boston for Traditional Japanese noodle soup. It is in the Back Bay on Hereford, near Boylston. It is nothng fancy on the inside, but the soup and the dishes like the Katsu are well made and enjoyable.
Are there any other good noodle soup places in the city anyone can recommend. Don't bother telling me about Cambridge or Brookline I don't leave the city.