In 'Hello, Whose Hello?', players plunge into the mind of an enigmatic, amnesiac protagonist who awakens in a bizarre library filled with books that contain the life stories of everyone they have ever met. Each interaction leads to a unique narrative twist, revealing the protagonist's deep connections and hidden secrets. As they navigate through fragmented memories and surreal conversations, they must piece together who they are while grappling with an unheard menace lurking within the pages. With each choice made, the reality around them shifts, creating a suspenseful atmosphere where trust is ephemeral, and the biggest mystery may be confronting their own identity.