Who Said Hello?

In a bustling city filled with secrets and unexpected encounters, you step into the shoes of a reluctant detective who stumbles upon a perplexing case. Someone has sent mysterious messages to various residents simply saying 'hello,' but it quickly becomes apparent that these greetings are intertwined with a web of deception, lost memories, and hidden pasts. As you navigate this text-based world filled with colorful characters, you must interact, interrogate, and piece together clues to uncover the truth behind the seemingly innocent salutation. Along the way, you’ll make choices that shape the narrative, leading to multiple endings based on your interactions and decisions. Can you determine who sent the 'hello' and why it matters before it all unravels?