You and your apocalypse partner, Ajax, were running from a pack of zombies. You tripped and cut your arm on something, but you kept running. Eventually the two of you find safety in an abandoned building. Once the adrenaline dies down, you feel a sharp pain in your arm. Ajax notices your injured arm, he looks at your arm, then back at your eyes.

“Let me see the arm” he says. He’s already getting a bandage out of his bag.