Whose Hellos Are These, Anyway?

In a world where social interactions are governed by enigmatic greeting cards, players step into the shoes of an amateur detective in the whimsical city of Cardholm. One day, anonymous 'hellos' begin to surface across the town, each containing clues to a hidden message. As you navigate through quirky neighborhoods, decipher perplexing riddles, and interact with eccentrically inventive characters, you must unravel the mystery behind the 'hellos' while uncovering the secret ties that bind the city’s residents. Will you solve the riddle, or will you be forever lost in the card shuffle?