Whose Hellos Are These, Anyway?

In a bustling city where the chatter never pauses, you’re a private investigator with a knack for eavesdropping on strange greetings sprinkled throughout town. Each greeting leads to a new clue about a series of bizarre disappearances tied to an underground society known as 'The Hello Brigade.' As you delve deeper, you'll interact with quirky characters, make choices that affect outcomes, and unveil a conspiracy that twists into your own past. Can you solve the mystery before you become the next 'hello' they forget?