Fish shop TSUNA is a Hawaiian takeout spot in Chatan, Okinawa, serving tuna poke. You pick a base tuna, then add toppings such as spicy mayonnaise, sea grapes, and avocado, and finish it with aloha sauce. Ordering works by choosing the base tuna first, then toppings and salad, and it can be done easily with photos. The shop has only two tables.