Whose Hellos Are These, Anyway?

In a bustling modern city, you play as an unconventional detective tasked with solving the mystery of bizarre greeting cards that have started appearing all over town. Each card is signed with an enigmatic 'Hello!' and accompanied by a riddle or a strange joke, but nobody seems to know their origin. As you navigate a web of quirky characters—each with their own peculiar greetings—you must gather clues, decode the intentions behind the messages, and ultimately confront the mastermind behind this greeting card phenomenon. Are they harmless, or is there something more sinister at play? Enjoy unexpected plot twists, laugh-out-loud interactions, and a playful tone as you work to uncover the truth.