Cut spam into small square pieces.
Cut cucumber thinly.*1
In a medium sized pot, add water and salt and bring it to boil. When it's boiling add macaroni. Cook for 9 minutes.
After 9 minutes, turn the heat off and remove the hot water in the sink. Remove the water well and move the macaroni to a medium bowl.
Add vinegar, salt, and olive oil in the bowl and mix with the macaroni. Cool down for a few minutes. *2
Add the cut spam, cucumber, onion, egg, sugar, and Japanese mayonnaise. Mix everything well.
Add black pepper to finish.