Blanch the fried tofu in boiling water and remove excess moisture.
Boil eggs, cool them, and mash to make egg salad.
Season the egg salad with mayonnaise, salt, and pepper.
Drain the canned tuna and mix well with mayonnaise.
Mix rice with salt, vinegar, and sugar to prepare sushi rice.
Fill about 2/3 of the fried tofu pouch with sushi rice.
Top the rice with egg salad and tuna.
Garnish with green onions or black sesame seeds to taste.