Charcoal Grill & Sushi Restaurant Kushiro is a Japanese restaurant on the sixth floor of KITTE Marunouchi in Chiyoda City, Tokyo, next to Tokyo Station. It serves sushi and seafood along with charcoal-grilled dishes, including sushi sets, sashimi, Hokkaido beef, and Shiretoko chicken. Seating ranges from the counter to private rooms, and window seats look out over the Tokyo Station building at night. Office workers and family groups arrive at the same hours, and the restaurant gets crowded then.