Whose Hellos Are These, Anyway?

In a quirky, bustling city where greetings and salutations hold strange and unexpected power, you find yourself entwined in a bizarre mystery when people start losing their own greetings—posters declaring 'No More Hellos' appear overnight. As the newly-appointed 'Hello Detective,' you must navigate through a colorful cast of characters—from a conspiracy-theorizing barista to a mime who claims to communicate with the 'Greeted.' Engage in dialogue-driven puzzles, make ethical choices, and unravel layers of absurd humor as you uncover the truth behind this strange phenomenon. Will you restore the city's greetings, or will it remain a 'Hello-less' wasteland?