Allergens, including gluten, are listed beside each menu item. As far as I could tell, most descriptions seemed accurate, except for some sushi rolls that contained tempura that were listen as gluten-free. You may have to ask for that not to be included.
I had the cucumber, salmon, and avocado maki. They also have gluten-free soy sauce, if you ask for it.
— Somewhat
— Gluten-free items are marked on the main menu
— Some
— Good