In 'Hello, Who?', you play as an amateur detective who wakes up one morning to find a series of bizarre messages appearing on your new smart mirror. Each message is a clue leading to different characters in your quirky neighborhood, each with their oddities and secrets. As you interact with these characters, you unravel a mystery involving a missing cat, mistaken identities, and an eccentric inventor who claims to have built a time machine. Your choices will shape the story and the fate of this bizarre community, filled with unexpected twists and laugh-out-loud moments.