Whose Hellos Are These, Anyway?

In a world where every effortless greeting can lead you into a complex web of relationships, you play as an anthropologist who specializes in greetings. One day, you receive a mysterious letter inviting you to the annual Greeting Exchange Festival, where various communities come to showcase their salutations. Dive into interactive conversations, decipher the cultural meaning behind every 'hello,' and unravel a comical mystery involving a rogue group who believes that going unacknowledged in social settings is the ultimate rebellion. As you navigate through absurd dialogues, hilarious misunderstandings, and unique characters, can you figure out whose hellos really matter?