In 'Whose Hello?', you step into the shoes of a cynical private detective in a retro-futuristic city where everyone is connected via an advanced but quirky social network called 'Hello'. One day, you receive an anonymous message containing a simple 'Hello', but this leads to a web of mysteries involving espionage, secret identities, and a series of bizarre coincidences. Navigate through a city filled with eccentric characters, unravel riddles, and piece together clues to discover who sent the 'Hello' and why it has sparked chaos across the platform. Choose your responses wisely as every interaction can change the course of your investigation and unravel deeper secrets of the city's inhabitants.