Who Said Hello?

In a bustling city where every street corner holds secrets and every passerby has a story, you are a quirky, sharp-witted detective with an uncanny ability to uncover hidden truths. Your day takes a turn when a mysterious note—indicating a potential mass conspiracy—is slipped under your door, only containing the phrase: 'Who said hello?' As you navigate through an array of eccentric characters, bustling cafes, and shadowy alleys, you must piece together clues that seem mundane yet critical, revealing layers of deception. Players will experience dialogue branches that influence character relationships, ample red herrings, and dynamic puzzles that integrate the clues you gather, all while racing against time to prevent an unseen calamity. Can you solve the mystery before 'hello' becomes a chilling farewell?