This restaurant offers bigger than average portion sizes on certain menu items, if you are really hungry, try the King Assorted Katsu (can be shared with 2-3 people depending on their appetite). I also recommend the Spicy Chirashi Don, Ramen & special sushi rolls. Their menu selection is large so it can be intimidating & rather too much for me.
My only downside for this establishment is that the place is outdated and could really use a renovation, but it could be just me since I've seen this same place even before this restaurant was called Izumi Sushi.