Whose Hellos Are These, Anyway?

In a quirky, bustling city where every street corner houses a wild cast of characters, you play as a reluctant private investigator known for your unique ability to recognize people's greetings. As you navigate through the chaos of a world where hellos are currency and a mysterious stranger has been hijacking greetings, you must gather clues by engaging with eccentric townsfolk. Each interaction reveals a piece of the puzzle while also forcing you to question the very fabric of societal manners. Can you piece together the mystery before the city loses its ability to say hello?