This is a restaurant that I stumbled upon and it was delicious. It's in the Akihabara neighborhood, and it stood out because it was crowded with villagers. You order at a machine (if you understand anything of course, otherwise you can play with it), then you take the ticket to the kitchen where they serve you. There is rice, and noodles, but all of it Japanese and delicious. In addition, it was very cheap. I would totally recommend it.