Jacob Alden is the main character and love interest of the visual novel game Lurking for Love, which blends elements of horror and romance. He is depicted as a lonesome man who develops a obsession in the player character, often returning their misdelivered mail, which serves as a catalyst for their interactions. Jacob's demeanor is polite, but he exhibits traits associated with 'yandere' archetypes, which adds a darker layer to his character.