Whose Hellos Are These, Anyway?

In a bustling metropolitan city teeming with quirky characters and secrets, you assume the role of a struggling freelance greeting card writer. One day, you discover a series of anonymous, bizarre hellos tucked inside various mailboxes scattered throughout the city. Intrigued, you embark on a comedic journey to uncover the identity of the mysterious author while grappling with eccentric neighbors, peculiar clients, and absurd situations. As you gather clues through witty interactions and make choices that affect your path, you'll encounter misfit artists, overzealous collectors, and even a rival greeting card scribe plotting to sabotage your quest. Can you figure out whose hellos they are, or will the city’s humor leave you puzzled?