Hinatomaru Tokyo Station Store (Yaekita Shokudo) is a small sushi shop in Tokyo Station serving tuna sushi, egg sushi, and steamed egg. You can pick each piece of sushi you like one at a time. You can sit down right away even when other shops have long lines, and the food comes out fast enough to eat while waiting for the Shinkansen. The shop is in a corner, so you have to find Yaekita Shokudo first.