In 'Whose Hello?', you play as a quirky amateur detective in a bustling metropolis where people seem overly obsessed with greetings. One day, a mysterious figure begins sending cryptic messages to you, sparking a city-wide competition to uncover the origin of the world's most iconic greetings. As you navigate through various neighborhoods, engaging with eccentric characters, solving puzzles, and piecing together clues, you'll encounter absurd scenarios and witty dialogue. Will you reveal the mastermind behind this odd phenomenon before the next 'hello' is uttered?