Whose Hellos Are These, Anyway?

You are the last person alive in a world where every greeting has taken on a life of its own, leading to chaos and confusion. The mundane act of saying hello has sparked a bizarre epidemic where greetings have manifested as living beings, each with their own personality and agenda. As you navigate this strange realm, you must interrogate various greetings, solve witty puzzles, and uncover the truth behind this peculiar phenomenon. Will you harness your charm and wit to tame the relentless 'Hellos' and uncover who—or what—is behind this greeting catastrophe, or will your attempts to solve the mystery fall flat?