Whose Hello Is It Anyway?

In a world where greetings are currency, you play as a witty freelance greeter in a bustling metropolis. An unexpected crisis erupts when the city’s greetings system malfunctions, leading to chaos as people give wildly inappropriate hellos—think mix-ups, misunderstood intentions, and unintended consequences. Navigate through quirky interactions with eccentric characters, solve comedic mysteries, and determine the origin of the infamous 'unsolicited hello' that is rumored to be cursed. Can you restore proper greetings before a global 'Greetocalypse' breaks out?