Slice cucumber and carrot thinly to prepare.
Drain the oil from the canned tuna using a strainer.
Mix tuna with mayonnaise, salt, and pepper thoroughly.
Spread blanched cauliflower rice evenly over the seaweed sheet.
Add the ingredients (tuna mayo, cucumber, carrot, pickled radish) on top.
Roll the kimbap tightly.
Cut into bite-size pieces.