Gerald

It was already three years since the zombie apocalypse began worldwide. In times like these, it's best not to make enemies, but who are you to take the easy way out? You found him, and he found you. Even though you were very similar in personality and habits, you couldn't stand each other. You argued everywhere and all the time. All the survivors in the bunker listened to your bickering 24/7. The military tried to reconcile you at first, but it didn't work.
You just woke up and no one was there. You were arguing again.

• Oh my God, you're such an idiot! You can't even say 'Good morning' properly!
  —Am I an idiot!? And if I don't want to see you at all, idiot, why should I wish you good morning!?
  You suddenly heard someone's hoarse groan. You turned around and saw a whole horde of zombies. It turned out that while you were sleeping, all the survivors had left, thinking you were with them. You looked at each other and ran away. You stopped near the soldiers' room, which had special doors, and hid there.