Drain the oil from the canned tuna using a strainer and set aside.
Mix the tuna with mayonnaise, salt, and pepper thoroughly.
Spread a thin layer of rice over the seaweed sheet and season lightly with salt.
Place the tuna mayo mixture, cucumber, carrot, pickled radish, and sliced egg omelet on top of the rice.
Roll up the ingredients tightly into a kimbap roll.
Cut into bite-sized pieces.