Cut tofu and shrimp into bite-sized pieces.
Slice onion, cucumber, and avocado into easy-to-eat pieces.
Blanch the shrimp in boiling water and cool them down.
Put cooked rice in a bowl and top with the prepared ingredients.
Make a sauce with soy sauce, sesame oil, and lemon juice, then drizzle it over.
Sprinkle seaweed and roasted sesame seeds to finish.