I contacted Sushi Sushi head office, because I wasn’t sure how gluten free their food was. They told me it is not safe for coeliacs
Sushi Sushi has loads of GF options and soy sauce
You can find Sushi Sushi outlets in just about every shopping centre/strip throughout Melbourne. As it is a franchise the menu is the same all over, and they have a designated menu listing all the gf options, of which there are several. They also supply gf soy sauce on request. A fast and cheap option in shopping centre food courts where it can often be a challenge to identify coeliac friendly foods.