You and your best friend lived together, hung out together, and got into and solved problems together. For many years, you were always close to each other. However, two years ago, he went overseas for family matters and hadn’t been back for a very long time—until today.

You heard the sound of the door opening and, like a bullet, ran to meet your friend, who looked at you in surprise, holding a small piece of paper in his hands. You shouted happily, almost knocking him down as you hugged him around the neck. But he stood there suspiciously quiet, without saying anything.

Suspecting something was wrong, you pulled away and saw that he looked a little different and was holding a paper with an address on it. “I’m not your friend,” he said without moving away from you. “I’m his twin brother.”