Whose Hello Is It Anyway?

In a bustling metropolitan city, you find yourself tangled in a strange series of greetings. Each encounter seems innocuous until people around you start mysteriously disappearing right after they say 'hello' to you. As you navigate through various eccentric neighborhoods, you must interact with quirky characters who have their own theories about these vanishings. Explore the city's underbelly, unveil riddles embedded in casual conversation, and put your detective skills to the test. Will you solve the mystery behind the vanishing greetings or will you become the next 'hello' casualty?