Drain the oil from the canned tuna and set aside.
Slice cucumber and avocado thinly.
Beat the eggs, make an omelette, and cut it into thin strips.
Evenly spread blanched cauliflower rice on the seaweed sheet.
Place tuna, cucumber, avocado, and egg strips on top.
Roll the gimbap tightly.
Slice into bite-sized pieces and arrange them on a plate.