CHANP one suggestion would be to hit Akihabara and have lunch at http://www.niku-mansei.com/. great food although its not super japanese (though it could be depending on the floor). you could hit some of the weird cafes they have there too. As for the restaurant, walk out of the Akihabara station towards electric town, walk to the big street, look left and find the building with the smiling cow on top