I can't think of a lot of MSC's that do specifically Japanese restaurants/food. There aren't a lot of nationwide chains that specialize in Japanese food. I can only think of Customer Impact (they do a sushi shop in a nationwide grocery store) and Coyle (I've seen some high-end Japanese restaurants being shopped in my area. It wasn't a chain restaurant though). If you go over to the post about Chinese food, I've listed a couple of MSC's that do online food ordering and app shops that allow you to pick any restaurant in your area. That might be the best way to get a shop for Japanese food.