Whose Hello Is It Anyway?

In a bustling city inhabited by quirky characters, you are a renowned 'Greetings Detective' tasked with solving the mystery of a bizarre phenomenon: people are inexplicably forgetting how to say hello! As you travel from one vibrant neighborhood to another, you'll encounter eccentric personalities, each hiding secrets about this mass forgetfulness. Gather clues through witty dialogue, make choices that affect relationships, and unravel the case while navigating the absurdity of human interactions. Will you be able to restore the city's greetings before a major festival, or will everyone forget how to acknowledge each other, leading to a silent, chaotic celebration?