Safety 9811. グルテンフリー串揚げ スー[Sû]
Book the kushiage omakase and let them send out skewer after skewer, each one crumbed in rice flour and fried in rice oil. It is the deep-fried specialty that is normally built entirely on wheat breadcrumbs.
Current sources describe the counter, batter, sauces, and sides as gluten-free rather than a single adapted course. It is a roughly six-seat, reservation-only room in Ginza, so treat it as a planned dinner, book well ahead, and confirm the current setup with the restaurant.