Diaries have always been a form of literary expression, always by the side of the creator, but in recent years, with their boom in popularity, they have become established as an independent genre and, at the same time, are becoming a target of consumption. This book is a collection of essays on "diaries" written by Hiroki Yamamoto of "Inu no Senaka-za," who continues to work with a consistent interest in expression and life, transcending genres such as novels, poetry, art, and design, and contributed to literary magazines. By treating diaries as "the minimal model of expression," this book explores "fiction" and "reality" through diaries, just as one would consider novels, criticism, essays, films, music, performances, and art. It reconsiders diaries as a possibility for life to be relived through writing and what is written, going beyond personality consumption. For anyone involved in expression, not just those who read and write.