Whose Hellos Are These, Anyway?

In a bustling metropolis where every day blends into the next, you take on the role of a disgruntled greeting card writer who stumbles upon a bizarre mystery: someone is sending cryptic messages disguised as cheerful greetings to various people in the city. As the protagonist, you must navigate a web of quirky characters, each with their own secrets and motives. Collect clues, unravel the truth behind the masked messages, and determine the identity of the mysterious sender. Will you be able to piece together the chaos and uncover the heart of this phenomenon, or will you become just another recipient of a puzzling 'hello'?