In a small pot bring water to a boil. When the water is boiling, slowly lower your eggs into the pot.
Cook your eggs for 7 minutes before immediately removing from heat. Place into a bowl of ice water.
Peel your eggs and reserve one to the side. Add two eggs to a small bowl with mayo, pepper and Shichimi.
Mash everything together until combined.
Scoop your salad mixture onto one slice of bread and spread evenly to the bread corners. Place your reserved egg in the center of the bread.
Add the second slice of bread on top and slice your sandwich horizontally.
Serve and enjoy immediately!