It's hard to answer that question without being able to see their menu. In general, you'll have to read the descriptions of the food and make a choice. Things that are fried (like tempura) will be more calorific. Sauces can tend to be oily, and high in sodium if that is a concern. Look for something that says it comes with steamed veggies, and ask for the sauce on the side if possible, and use it sparingly. If they serve large portions, ask for a take home box before you dig in, and put half of it away.
These are just general tips, that would work in any restaurant.
I'm Tealeaf, and I approve of this message.
My weight loss site, with blog, before and after pics, recipes, tips, charts, and stuff. Annie Takes Off