Adjust the oven's baking rack to the position second from the top. Subsequently, preheat the oven to a temperature of 450°F (232°C). Simultaneously, prepare a small cast iron skillet, preferably between 5 to 6 inches in diameter, by lightly greasing it with oil or a cooking spray to prevent sticking.

In a suitable mixing bowl, combine the sweet corn, mozzarella cheese, Kewpie mayonnaise, granulated sugar, salt, and black pepper. Ensure that the ingredients are uniformly mixed.

Once mixed, transfer the combined ingredients into the previously prepared skillet. Ensure an even distribution across the skillet.

For additional richness, garnish the mixture with an extra layer of shredded mozzarella cheese.

Place the skillet in the preheated oven. Allow it to bake for approximately 10 minutes or until the cheese achieves a melted consistency with sporadic golden-brown spots.

Upon completion, remove the skillet from the oven. Allow the Korean Cheese Corn to cool briefly before serving to ensure optimal taste and texture.