Whose Hellos Are These, Anyway?

In a city where everyone greets each other by shouting random hellos and cryptic phrases, you play as a low-key linguist who accidentally uncovers a language conspiracy hidden behind these bizarre greetings. Travel through different neighborhoods, converse with quirky NPCs to collect clues, and navigate a distinctly humorous plot involving rival greeting gangs, secret societies, and a mysterious figure known only as 'The Salutation Specialist'. Can you unravel the true meaning behind these hellos before you become the next victim of a linguistic plot twist?