Blanch the tofu pockets in boiling water, then squeeze out the moisture.
Drain the oil from the canned tuna using a sieve.
Finely chop cucumber, avocado, and onion.
Mix mayonnaise, soy sauce, and wasabi with the tuna.
Combine the prepared vegetables and tuna.
Stuff the filling into the tofu pockets.
Sprinkle seaweed flakes and sesame seeds on top as desired.