Whose Hellos Are These, Anyway?

Dive into the chaotic world of modern communication, where you've mysteriously become the 'Hello Whisperer.' Your mission? Retrieve and decode bizarre greetings that have been left throughout a vibrant city filled with eccentric characters. Armed with your quick wit and a smartphone, you'll navigate through urban legends, confront quirky suspects, and engage in hilarious dialogues. Unravel the mystery behind the bizarre helloes to uncover a plot that threatens to unleash chaos on social interactions forever.