I had this for dinner at one of the chain fast food stores they have in Japan. I had Katsudon (Pork Strips on Rice) and the meal came with a half-boiled egg, kimchi, and soup. It was pretty good... and filling too! I was famished from all the walking.
Anyway, the most interesting thing about the whole meal was the ordering part. There were only two people minding the place, one in the kitchen and one outside taking care of the customers. Right by the door is a machine that has pictures of all the meals they have. And... guess what? You press the meal you want and put in some coins. Voila! You can a meal ticket and that's what you give to the waiter. No Japanese needed. Hmm... efficient too.