Prepare the Rice: In a bowl, mix the sticky rice with soy sauce until evenly coated.

Prepare the Tuna Mixture: In a separate bowl, combine the drained tuna with Kewpie mayonnaise.

Slice the Avocado: Slice the avocado and fan it out for presentation.

Assemble the Dish: Place the seasoned rice in a serving bowl.

Layer Ingredients: Top the rice with the tuna mixture, sliced avocado, and diced cucumber.

Garnish: Finish with a drizzle of sweet soy sauce, a sprinkle of sesame seeds or everything bagel seasoning, and add the seaweed sheets for extra flavour.