Not exactly Sushi but called "Kaisendon", which is basically Sashimi bowl as you see above. What's great about their style is that you get to taste two different versions of Kaisendon; just as it is first, and with fish-stock-soup after. Both are great and the cheapest menu comes under 1,000 JPY.......super generous pricing for the quality and portion. You'll get full for sure.
Expect to wait in the line for 30 minutes or more pretty much whenever you go as it's very popular. That's the only downside.
My rating: 5.0
Website | Tabelog | More photos | 03-6262-0823
Address: 3-1-15 Nihonbashi, Chuo-ku, Tokyo
Access: 3 minutes from Nihonbashi station, 5 minutes from Tokyo station
Budget: 1,000 JPY or more
Open: 11:00-15:00, 17:00-21:00