Crack the eggs into a bowl and mix with sugar.
Sift in the cake flour and baking powder, then stir to combine.
Add the milk and mix until the batter is smooth.
Preheat a pan over medium-low heat, lightly oil it, then wipe off the excess oil with a paper towel.
Spoon the batter onto the pan to form round shapes.
When bubbles appear on the surface of the batter, flip and cook until golden brown.
Place a suitable amount of sweet red bean paste between two pancakes, sandwich them together, and serve.