Sushi Dai was a super popular sushi restaurant in the Tsukiji Fish Market. People used to wait for 4 to 5 hours then, but after it was transferred to Toyosu, the wait time went down to 2 to 3 hours. You can enjoy meals awarded a Bib Gourmand by Michelin with 10 pieces (and one piece of your choice) for 4,000JPY. The restaurant opens at 5am, so I recommend that you go there early for breakfast.
Sushi Dai is located in a restaurants area on the third floor of the Fisheries Intermediate Wholesale Market Building (Block 6). From Shijo-mae Station, turn right after the gate and go along the street.
On the same floor, there are also Torito, a restaurant that specializes in “Oyakodon” (a rice bowl with chicken and egg on top) (for about 1,000JPY) and Sushi Bun, an established restaurant with the history of 180 years (chef’s favorites for 4,200JPY). I personally recommend these restaurants as well.