1. In one of the medium sized bowls, combine tuna, edamame, mayo, and sriracha. Stir until it looks like the fish and edamame are covered in spicy mayo. Set aside.
2. In the other medium sized bowl, combine rice, sweetener, and rice wine vinegar. Stir everything together and set aside.
3. In the serving bowl, add chopped spinach to the bottom to create a "bed" of spinach. One on side, add the rice. Alongside the rice, add the tuna and edamame mixture. Top the rice sice with furikake seasoning.