A bit difficult to find, but just look for the Japanese Airline office and enter on the left side of it. It's like a small shopping centre with one of the greatest Japanese restaurants ever seen. Definitely in Brussels. In fact, you see all diplomat drivers standing outside on the street as their boss is enjoying the great food again. Skip lunch and go for it. Do make sure you have plenty of cash or the old famous credit card with you. Real Japanese art on a plate.