Whose Hello Is This, Anyway?

Step into the peculiar world of Zurich, a bustling city where you, a sarcastic amateur detective, stumble upon a string of mysterious messages signed only with the phrase "Hello!" Your task? Unravel the comedic chaos behind these nonsensical notes that appear all over town. Interact with quirky characters, solve baffling puzzles, and navigate through the absurdity of misunderstandings and mistaken identities. Each choice you make affects the hilarity and outcome of your mission, leading to different endings with an extra twist at each turn. Can you determine whose hello this really is?