Wash the English cucumber thoroughly under running water and slice it into thin rounds, about 1/8 inch thick. Arrange the slices on a serving platter.

In a medium-sized bowl, combine the chopped imitation crab sticks with the Kewpie mayonnaise and whipped cream cheese. Gently fold the ingredients together until well-coated.

Drizzle a few teaspoons of soy sauce over the crab mixture and stir to distribute evenly.

Carefully cut the ripe avocado into small cubes and gently fold it into the crab mixture.

Evenly distribute the crab and avocado mixture onto the prepared cucumber slices, ensuring a beautiful presentation.

Sprinkle toasted sesame seeds over the top of each cucumber slice and serve immediately.