This little restaurant on via Tiburtina is hidden, it was a Chinese restaurant before, it got transformed and now it's actually my favorite Japanese one. They deliver, they have take away, they are clean and incredibly fast in serving, good in all they do, the fried and not, the sashimi, all the fish they have is fresh and really good, they have a nutella crepe too! Affordable prices and excellent service!
I've been to every sushi place this side of Termini and this is in the top 2 or 3. Reasonable price, good food, quick service. Only bad points are how cramped it is, and there are some places in the area that do the same stuff for 10 euro, whereas here the lunchtime buffet is 14.