In 'Whose Hello?', you play as a quirky private investigator in a bustling city where everyone seems to have a secret. You receive an anonymous message containing just the word 'Hello?' and a time. Intrigued, you find yourself unraveling a web of humorous, dramatic, and unexpected events as you navigate through a colorful cast of characters—from a conspiracy theorist librarian to a flamboyant artist obsessed with sound. With each conversation, your choices will determine the fate of the city's most outrageous characters and uncover a mystery that is hilariously absurd yet profoundly meaningful.