They do have gluten free soy sauce. Asked the waitress to check ingredients on the miso soup and she was very helpful. No issues.
— No gluten-free information on the menu
They do have gluten free soy sauce. Goro, the owner/sushi chef, is happy to make gluten free modifications. He is a sweetheart and will follow whatever guidelines you give him, but not knowledgeable re: cross-contamination unless you bring it up.