Whose Hello Is It Anyway?

In a world where social interactions dictate reality, you play as a hapless Greeting Coordinator in the bustling city of Nametropolis, where every hello, wave, and nod is currency. One day, you accidentally mix up greetings, causing chaos among the city's factions: the Sundowners, who love cool, casual hellos, and the Polite Society, who champion formal handshakes. Your goal is to navigate the repercussions of this mix-up, engage in wacky conversations, and restore order while juggling eccentric characters and outrageous scenarios. Can you untangle this mess and figure out whose hello means what before the entire city flips upside down?