On the 5th floor of Oazo Building (across from Tokyo Station) is this gem of a place. They have just two items, curry & tempura, in multiple combinations. Udon with different types of curries and shrimp & vegetable tempura. It is, by far, the best curry I have tasted in Japan. The portions are generous, noodles are fresh, and the curry is delicious. At about 1200 Yens, this is the best value in town, for lunch or dinner.