Slice cucumber and carrot into thin strips.
Sprinkle salt on the cucumber, let it sit for 10 minutes, then squeeze out the moisture.
Lightly stir-fry the carrot in a pan and let it cool.
Tear the crab sticks along the grain.
Spread seaweed on a bamboo mat, add rice, and sprinkle a little salt and sesame oil.
Add cucumber, carrot, crab sticks, pickled radish, and mayonnaise.
Roll it up and slice into bite-sized pieces.