My Familiar Is Defin

The oldest and strongest emotion in humans is fear, and the oldest and strongest fear is the unknown.,As a result of being overworked, I blinked and found myself transported to another world. I entered the body of my alternate self, who looked and was named exactly the same as me. I also absorbed their memories.,Countless human geniuses rose, driving out demons and establishing human cities. To this day, a brilliant civilization has even been born.。