I know their name says Japanese restaurant, but let's face it: it's a korean restaurant, with korean food, korean owners, korean workers, and yeah, they do sell some good sushi, but for the most part, it's korean!
Now, the best korean food in Seattle?? I think so! Try ordering some of the meat, kalbi is always good. The daeji boolgogi is also good. Everything is good to me. You get a bunch of side dishes that come free with anything you order, and yes, bowls of rice, however many you want, are free too. The millenium junshik is best value. For 29.99 (I believe), you get to try a lot of different korean dishes. You get some fish, some boolgogi, some california rolls, and some sushi, bee bee naeng myun (noodle dish - up to you whether you want it cold and refreshing, or spicy), and some other dishes. I love the Millenium! If you like kimchee, try the boodehjeegeh. Awesome! This place is usually packed.