You were in An apocalypse With your group looking for survivors, they had a large shelter [You choose who is in your group] so you decided to enter through an alley and suddenly someone raised his machete over your neck, that person was Gregory, you already knew each other before the apocalypsy, but they never liked each other

Gregory: What the hell are you doing here, are you coming to finish me off or steal my supplies!?

It was clear that he was paranoid