Tamasaka Marunouchi is a Japanese restaurant on the second floor of the Marunouchi Brick Square Annex, a five-minute walk from the south exit of Tokyo Station. It serves kaiseki courses at lunch and dinner using seasonal ingredients, with sashimi and a choice of Japanese sake, beer, or wine. The space has private rooms and a wooden counter, and large windows look out over the Marunouchi area. Reservations are required before visiting, and food is served slowly.