Whose Hellos Are These, Anyway?

In a bustling city where privacy is as rare as kindness, you play as Jordan, a sarcastic barista with a knack for eavesdropping. One day, you discover cryptic notes left on your coffee shop's counter, each signed with mysterious initials and an unusual greeting. As you follow these breadcrumbs through various eccentric neighborhoods and encounter quirky characters, you unveil a hidden network of secretive societies that communicate only through these bizarre hellos. Can you decipher the meaning behind them and prevent an impending city-wide scandal, all while juggling your job and dodging some seriously oddball adversaries?