In a medium bowl, combine drained tuna, egg, breadcrumbs, soy sauce, ground ginger, salt, and black pepper. Mix until the mixture holds together.
Shape into 6–8 small patties, pressing gently to compact them.
Heat olive oil in a skillet over medium heat.
Cook each patty for about 3–4 minutes per side, or until golden brown and heated through.
In a small bowl, stir together mayonnaise and sriracha to create the spicy mayo.
Serve the Asian-Style Tuna Cakes with Spicy Mayo drizzled on top or on the side for dipping.