Cut hardboiled eggs in half, lengthwise
Carefully remove the egg yolks and place them into a small bowl. Mash with a fork until smooth
Add Kewpie mayo, mustard, milk, salt and pepper and mix with egg yolks until blended and creamy.
Using a spoon or piping bag, fill the emptied egg whites with the yolk mixture, then lightly sprinkle with paprika and/or dried parsley. Enjoy!