Many of us know people who maintain a diary, chronicling their lives within its pages. While some merely document thoughts, feelings, decisions, or goals, this book offers a unique perspective: delving into the diary's own views, thoughts, and emotions as it becomes a human's confidant, safeguarding their innermost thoughts and experiences. The diary's journey begins innocuously, residing on a store shelf until it's chosen by a girl who brings it into her home, where she lives with her parents and brother. Through its pages, the diary expresses emotions, thoughts, and insights gleaned from its observations of the world around it. It forms a bond with another household item, the planner, companion to the girl's brother, who introduces the diary to its new environment and ensures its comfort. As they forge a deep friendship, they share their daily encounters, joys, and sorrows, embracing the reality of their respective fates and lifespans with grace and acceptance.