Whose Hellos Are These, Anyway?

Step into the shoes of a quirky private investigator in a bustling metropolis where everyone seems to have adopted strange greetings. As you receive bewildering messages, your task is to uncover the origins of these bizarre hellos by engaging with an array of eccentric characters. Each choice you make unveils clues that lead you deeper into a tangled web of misunderstandings, miscommunication, and hilariously absurd situations. Navigate through comical encounters, solve witty puzzles, and ultimately face a secretive society known as 'The Hello Brigade,' who believes the right greeting can change the world. Will you get to the bottom of these perplexing salutations before they alter the fabric of social interaction forever?