It's a small place with only a few tables, but with a very unique and delicious menu. The food is pretty much what you would find at an American drive-in, but just about everthing has a Japanese twist. All of their burgers/sandwiches are served "katsu style," deep-fried with panko coating. They have ground beef, pork cutlet, and chicken. For fries you have the choice of curry or nori seasoning, with traditional salted also available. They also had some Asian inspired flavors for their milkshakes.
Prices aren't cheap, but are pretty standard for burger joints around here. Most of the burgers were in the $5-8 range and all of the servings were big. So accounting for the taste and the size, the price was well worth it.
Definitely check this place out before heading over to a M's game or if you happen to be spending some time in Seattle.